Document:

Exhibit 10.39

THE PROFIT
SHARING PLAN OF

QUEST
DIAGNOSTICS INCORPORATED

(Amendment
and Restatement

Effective January 1, 2007)

TABLE OF CONTENTS

	
 

	
 

	
 

	
 

	
 

	
INTRODUCTION 

	
1 

	
 

	
 

	
DEFINITIONS 

	
4 

	
 

	
 

	
ELIGIBILITY AND PARTICIPATION 

	
24 

	
 

	
 

	
 

	
2.1

	
 

	
Eligibility

	
24

	
 

	
 

	
 

	
 

	
 

	
 

	
2.2

	
 

	
Participation

	
24

	
 

	
 

	
 

	
 

	
 

	
 

	
2.3

	
 

	
Beneficiary Designation

	
25

	
 

	
 

	
 

	
 

	
 

	
 

	
2.4

	
 

	
Investment Option Specification

	
26

	
 

	
 

	
 

	
 

	
 

	
 

	
2.5

	
 

	
Notification of Individual Account Balance

	
27

	
 

	
 

	
 

	
 

	
 

	
CONTRIBUTIONS 

	
28 

	
 

	
 

	
 

	
3.1

	
 

	
Employee Pre-Tax Contributions

	
28

	
 

	
 

	
 

	
 

	
 

	
 

	
3.2

	
 

	
Employer Matching Contributions

	
31

	
 

	
 

	
 

	
 

	
 

	
 

	
3.3

	
 

	
Discretionary Contributions

	
33

	
 

	
 

	
 

	
 

	
 

	
 

	
3.4

	
 

	
Rollover Contributions

	
33

	
 

	
 

	
 

	
 

	
 

	
 

	
3.5

	
 

	
Maximum Deductible Contribution

	
34

	
 

	
 

	
 

	
 

	
 

	
 

	
3.6

	
 

	
Actual Deferral Percentage Test Safe Harbor

	
34

	
 

	
 

	
 

	
 

	
 

	
 

	
3.7

	
 

	
Payment of Contributions to Trustee

	
35

	
 

	
 

	
 

	
 

	
 

	
 

	
3.8

	
 

	
Employee After-Tax Contributions

	
35

	
 

	
 

	
 

	
 

	
 

	
 

	
3.9

	
 

	
Actual Contribution Percentage Test Safe Harbor

	
35

	
 

	
 

	
 

	
 

	
 

	
 

	
3.10

	
 

	
Merger of Quest Diagnostics Incorporated Employee
  Stock Ownership Plan into this Plan

	
36

	
 

	
 

	
 

	
 

	
 

	
 

	
3.11

	
 

	
USERRA

	
37

	
 

	
 

	
 

	
 

	
 

	
 

	
3.12

	
 

	
QNEC’s

	
37

	
 

	
 

	
 

	
 

	
 

	
ALLOCATIONS TO INDIVIDUAL ACCOUNTS 

	
38 

	
 

	
 

	
 

	
4.1

	
 

	
Individual Accounts

	
38

	
 

	
 

	
 

	
 

	
 

	
 

	
4.2

	
 

	
Allocation of Employee Pre-Tax Contributions

	
38

	
 

	
 

	
 

	
 

	
 

	
 

	
4.3

	
 

	
Allocation of Employer Matching Contributions

	
39

	
 

	
 

	
 

	
 

	
 

	
 

	
4.4

	
 

	
Allocation of Discretionary Contributions

	
39

	
 

	
 

	
 

	
 

	
 

	
 

	
4.5

	
 

	
Allocation of Forfeitures

	
39

	
 

	
 

	
 

	
 

	
 

	
 

	
4.6

	
 

	
Maximum Additions

	
40

i

	
 

	
 

	
 

	
 

	
 

	
DISTRIBUTIONS 

	
41 

	
 

	
 

	
 

	
5.1

	
 

	
Normal Retirement

	
41

	
 

	
 

	
 

	
 

	
 

	
 

	
5.2

	
 

	
Disability

	
41

	
 

	
 

	
 

	
 

	
 

	
 

	
5.3

	
 

	
Death Before Retirement or Termination of Employment

	
41

	
 

	
 

	
 

	
 

	
 

	
 

	
5.5

	
 

	
Termination of Employment

	
43

	
 

	
 

	
 

	
 

	
 

	
 

	
5.6

	
 

	
Method of Payment

	
48

	
 

	
 

	
 

	
 

	
 

	
 

	
5.7

	
 

	
Cash-Outs; Consent

	
51

	
 

	
 

	
 

	
 

	
 

	
 

	
5.8

	
 

	
Benefits to Minors and Incompetents

	
52

	
 

	
 

	
 

	
 

	
 

	
 

	
5.9

	
 

	
Payment of Benefits

	
53

	
 

	
 

	
 

	
 

	
 

	
 

	
5.10

	
 

	
Valuation of Accounts

	
57

	
 

	
 

	
 

	
 

	
 

	
 

	
5.11

	
 

	
Direct Rollovers

	
60

	
 

	
 

	
 

	
 

	
 

	
 

	
5.12

	
 

	
Payment to Alternate Payee Under QDRO

	
62

	
 

	
 

	
 

	
 

	
 

	
 

	
5.13

	
 

	
Distribution Upon Severance from Employment

	
62

	
 

	
 

	
 

	
 

	
 

	
LOANS AND WITHDRAWALS 

	
63 

	
 

	
 

	
 

	
6.1

	
 

	
Loans to Participants

	
63

	
 

	
 

	
 

	
 

	
 

	
 

	
6.2

	
 

	
Hardship Withdrawals

	
66

	
 

	
 

	
 

	
 

	
 

	
 

	
6.3

	
 

	
Non-Hardship Withdrawals

	
69

	
 

	
 

	
 

	
 

	
 

	
 

	
6.4

	
 

	
Withdrawal of Dividends

	
71

	
 

	
 

	
 

	
 

	
 

	
 

	
6.5

	
 

	
Certain Dividends

	
72

	
 

	
 

	
 

	
 

	
 

	
 

	
6.6

	
 

	
Qualified Reservist Distribution

	
72

	
 

	
 

	
 

	
 

	
 

	
TRUST FUND 

	
74 

	
 

	
 

	
 

	
7.1

	
 

	
Contributions

	
74

	
 

	
 

	
 

	
 

	
 

	
 

	
7.2

	
 

	
Trustee

	
74

	
 

	
 

	
 

	
 

	
 

	
 

	
7.3

	
 

	
Employer Stock Fund

	
74

	
 

	
 

	
 

	
 

	
 

	
FIDUCIARIES 

	
76 

	
 

	
 

	
 

	
8.1

	
 

	
General

	
76

	
 

	
 

	
 

	
 

	
 

	
 

	
8.2

	
 

	
Corporation

	
76

	
 

	
 

	
 

	
 

	
 

	
 

	
8.3

	
 

	
Employer

	
77

	
 

	
 

	
 

	
 

	
 

	
 

	
8.4

	
 

	
Trustee

	
77

	
 

	
 

	
 

	
 

	
 

	
 

	
8.5

	
 

	
Committee

	
77

	
 

	
 

	
 

	
 

	
 

	
 

	
8.6

	
 

	
Claims for Benefits

	
79

ii

	
 

	
 

	
 

	
 

	
 

	
 

	
8.7

	
 

	
Denial of
  Benefits – Review Procedure

	
79

	
 

	
 

	
 

	
 

	
 

	
 

	
8.8

	
 

	
Records

	
80

	
 

	
 

	
 

	
 

	
 

	
 

	
8.9

	
 

	
Missing
  Persons

	
81

	
 

	
 

	
 

	
 

	
 

	
AMENDMENT
AND TERMINATION OF THE PLAN 

	
82 

	
 

	
 

	
 

	
9.1

	
 

	
Amendment of
  the Plan

	
82

	
 

	
 

	
 

	
 

	
 

	
 

	
9.2

	
 

	
Termination
  of the Plan

	
82

	
 

	
 

	
 

	
 

	
 

	
PROVISIONS
RELATIVE TO EMPLOYERS INCLUDED IN PLAN 

	
84 

	
 

	
 

	
 

	
10.1

	
 

	
Method of
  Participation

	
84

	
 

	
 

	
 

	
 

	
 

	
 

	
10.2

	
 

	
Withdrawal

	
84

	
 

	
 

	
 

	
 

	
 

	
TOP-HEAVY
PROVISIONS 

	
86

	
 

	
 

	
 

	
11.1

	
 

	
Determination
  of Top-Heavy

	
86

	
 

	
 

	
 

	
 

	
 

	
 

	
11.2

	
 

	
Top-Heavy
  Definitions

	
87

	
 

	
 

	
 

	
 

	
 

	
MISCELLANEOUS 

	
89 

	
 

	
 

	
 

	
12.1

	
 

	
Governing
  Law

	
89

	
 

	
 

	
 

	
 

	
 

	
 

	
12.2

	
 

	
Construction

	
89

	
 

	
 

	
 

	
 

	
 

	
 

	
12.3

	
 

	
Administration
  Expenses

	
89

	
 

	
 

	
 

	
 

	
 

	
 

	
12.4

	
 

	
Participant’s
  Rights; Acquittance

	
89

	
 

	
 

	
 

	
 

	
 

	
 

	
12.5

	
 

	
Spendthrift
  Clause

	
89

	
 

	
 

	
 

	
 

	
 

	
 

	
12.6

	
 

	
Merger,
  Consolidation or Transfer

	
89

	
 

	
 

	
 

	
 

	
 

	
 

	
12.7

	
 

	
Mistake of
  Fact

	
90

	
 

	
 

	
 

	
 

	
 

	
 

	
12.8

	
 

	
Counterparts

	
90

	
 

	
 

	
 

	
 

	
 

	
 

	
12.9

	
 

	
Transitional
  Rule

	
90

	
 

	
 

	
 

	
 

	
 

	
ADOPTION OF
  THE PLAN

	
91

	
 

	
 

	
Appendix A 

	
92 

	
 

	
 

	
Appendix B 

	
93 

	
 

	
 

	
Appendix C  

	
95 

iii

INTRODUCTION

          Effective
October 1, 1973, MetPath Inc. established the Profit Sharing Plan of MetPath
Inc. (the “MetPath Plan”) for the benefit of its eligible employees.

          Effective
September 1, 1986, the MetPath Plan was amended and restated to incorporate a
qualified cash or deferred arrangement under Code Section 401(k). Effective
January 1, 1989, the MetPath Plan was again amended and restated in its
entirety to comply with the requirements of the Tax Reform Act of 1986 and
subsequent legislation.

          Prior
to April 1, 1992, the MetPath Plan was funded through a group annuity contract
arrangement with Ætna Life Insurance Company and with Connecticut National Bank
as Trustee. Effective April 1, 1992, MetPath Inc. severed the group annuity
contract arrangement, removed Connecticut National Bank as Trustee, and
appointed Fidelity Management Trust Company as successor Trustee.

          Prior
to October 31, 1992, MetPath Inc., a New York corporation, was a wholly-owned
subsidiary of Corning Lab Services Inc. As a result of a corporate
restructuring, effective October 31, 1992, MetPath Inc. merged with and into
Corning Lab Services Inc. Consequently, effective October 31, 1992, the Profit
Sharing Plan of MetPath Inc. was renamed the Profit Sharing Plan of Corning Lab
Services Inc.

          As
a result of another corporate restructuring, effective January 1, 1994, Corning
Lab Services Inc. changed its name to MetPath Inc., a Delaware corporation.
Consequently, effective January 1, 1994, the Profit Sharing Plan of Corning Lab
Services Inc. was renamed the Profit Sharing Plan of MetPath Inc.

          Effective
January 1, 1996, the Plan was again amended and restated in its entirety to
reflect certain substantive changes and was renamed the Profit Sharing Plan of
Corning Life Sciences Inc. to reflect another corporate restructuring effective
December 31, 1994.

          Also
effective January 1, 1996, the assets and liabilities of this Plan representing
the account balances of Corning SciCor, Inc. employees were transferred to the
Corning Pharmaceutical Services Inc. Retirement Savings Plan.

          Effective
December 31, 1996, the Plan was again amended and restated in its entirety to
reflect the spinoff of Quest Diagnostics Incorporated from Corning Incorporated
and the

1

adoption of an employee stock ownership plan and was
renamed the Profit Sharing Plan of Quest Diagnostics Incorporated.

          Effective
January 1, 1997, the Plan was again amended and restated to reflect certain
substantive changes and to comply with the applicable provisions of the
following acts: the Uniformed Services Employment and Reemployment Rights Act
of 1994, the Small Business Job Protection Act of 1996, the Taxpayer Relief Act
of 1997, the Internal Revenue Service Restructuring and Reform Act of 1998, and
the Community Renewal Tax Relief Act of 2000.

          On
June 18, 2002, a First Amendment to the Plan was signed.

          Effective
January 1, 2002, the Plan is hereby again amended and restated to incorporate
the provisions of the First Amendment, to reflect certain other substantive
changes and to comply with the applicable provisions of the Economic Growth and
Tax Relief Reconciliation Act of 2001 and the Job Creation and Worker
Assistance Act of 2002.

          This
Plan consists of a profit sharing plan which is intended to qualify under
Sections 401(a) and 401(k) of the Internal Revenue Code at 1986, as amended
(the “Code”).

          Prior
to January 1, 2002, the Plan also consisted of an employee stock ownership plan
which was intended to qualify as a stock bonus plan under Code Section 401(a)
and as an employee stock ownership plan under Code Section 4975(e)(7). 

          Effective
October 1, 2002, the Quest Diagnostics Incorporated Employee Stock Ownership
Plan (the “ESOP”) merged into this Plan, and the assets and liabilities of the
ESOP were subsequently transferred to the Trust Fund. However, the portion of
this Plan representing the amounts transferred from the ESOP shall not be
considered an employee stock ownership plan under Code Section 4975(e)(7).

          Except
as expressly provided herein, the Plan provisions as in effect immediately
prior to this amendment and restatement shall remain in effect for those
Participants who do not complete an hour of service at any time after January
1, 2002.

          No
provision of this amended and restated Plan shall be construed to eliminate or
reduce any early retirement benefit or subsidy that continues after retirement
or optional form of benefit that existed under the Plan prior to this amendment
and restatement, except to the extent permitted under Treasury Regulations
§1.401(a)-4 and §1.411(d)-4.

          Effective
June 1, 2007, the portion of a Participant’s Individual Account under the Plan
that is invested in the Employer Stock Fund shall consist of an employee stock ownership plan

2

which is intended to qualify
as a profit sharing plan under Code Section 401(a) and as an employee stock
ownership plan under Code Section 4975(e)(7).

          Effective
January 1, 2007, the Plan is hereby again amended and restated to incorporate
the provisions of the First through the Sixth Amendments, to reflect the merger
of LabOne, Inc. Profit Sharing Plan and the LabOne, Inc. Money Purchase Pension
Plan. Certain provisions relating to the Pension Protection Act of 2006 are
adopted effective as of January 1, 2008.

3 

ARTICLE I
DEFINITIONS

1.1 As used herein, unless otherwise required by the
context, the following words and phrases shall have the meanings indicated:

          Active
Participant – For purposes of the allocation of a Discretionary
Contribution made with respect to a Plan Year, a Participant is an Active
Participant if he (1) is an active Employee as of the last day of such Plan
Year, (2) is on authorized leave of absence as of the last day of such Plan
Year, (3) has terminated employment due to a reduction-in-force during such
Plan Year, or (4) has died during such Plan Year.

          Advance
Medical Plan – The Advance Medical & Research Center, Inc. Retirement
Plan, the assets and liabilities of which have been transferred to this Plan.

          Affiliate
– An organization which is not an Employer, but which must be considered
together with an Employer under Code Sections 414(b), (c), (m) or (o).

          AML-East
Plan – The AML 401(k) Plan, the assets and liabilities of which have been
transferred to this Plan.

          AML-East
Plan Participant – A Participant who was formerly a participant in the
AML-East Plan.

          AML-West
Plan – The APL Healthcare Group Inc. Profit Sharing and 401(k) Plan, the
assets and liabilities of which have been transferred to this Plan.

          AML-West
Plan Participant – A Participant who was formerly a participant in the
AML-West Plan.

          Appropriate
Request – A request by a Participant in the form and manner provided by the
Committee that is appropriate for the intended purpose. If the Committee and
the Plan’s recordkeeper so agree, an Appropriate Request may be executed over
the telephone or Internet. To constitute an Appropriate Request, such request
must be completed correctly and, if required to be in writing, duly executed
and delivered to the Committee.

          Beneficiary
– Any person designated by a Participant under Section 2.3 to receive such
benefits as may become payable hereunder after the death of such Participant.

          Board
– The Board of Directors of the Corporation.

4

          Catch-Up
Pre-Tax Contributions – Contributions made to the Plan by the Employer
under Section 3.1(b) pursuant to a salary reduction agreement entered into
between the Employer and the Participant.

          CBCLS
Employer Contribution Sub-Account – The CBCLS Employer Contribution
Sub-Account shall hold any amount transferred to this Plan from the CBCLS Plan
representing employer matching contributions and discretionary contributions
made to the CBCLS Plan on behalf of a Participant who was formerly a
participant in the CBCLS Plan but was not an active participant in the CBCLS
Plan on December 31, 1991, and any earnings and losses thereon. (Any amount
transferred to this Plan from the CBCLS Plan representing employer matching
contributions and discretionary contributions made to the CBCLS Plan on behalf
of a Participant who was an active participant in the CBCLS Plan on December
31, 1991 shall be held in such Participant’s Rollover Sub-Account.)

          CBCLS
Plan – The Continental Bio Clinical Laboratory Service, Inc. Profit Sharing
and Retirement Savings Plan, the assets and liabilities of which have been
transferred to this Plan.

          CDS
Plan – The Clinical Diagnostics Services 401(k) Plan, the assets and
liabilities of which have been transferred to this Plan.

          Code
– The Internal Revenue Code of 1986, as amended.

          Committee
– The Benefits Administration Committee, as provided for in Section 8.5, or a
duly-authorized representative of the Benefits Administration Committee.

          Contributions
– Payments as provided herein by the Employer to the Trustee for the purpose of
providing the benefits under this Plan.

          Corning
Stock Fund – A stock fund investing primarily in the common stock of
Corning Incorporated.

          Corporation
– Quest Diagnostics Incorporated (DE), or any successor thereto. The
Corporation is the “plan sponsor,” “named fiduciary,” and “administrator” of
the Plan (as such terms are defined under ERISA).

          Covance
Stock Fund – A stock fund investing primarily in the common stock of
Covance, Inc., formerly know as Corning Pharmaceutical Services Inc.

          CPF
Pension Plan – The Clinical Pathology, Inc. Pension Plan, the assets and
liabilities of which have been transferred to this Plan.

5

          CPF
Pension Plan Participant – A Participant whose Individual Account includes
a Money Purchase Pension Plan Sub-Account.

          CPF
Savings Plan – The CPF/MetPath Savings and Retirement Plan (formerly, the
MDS Health Group, Inc. Savings and Retirement Plan), the assets and liabilities
of which have been transferred to this Plan.

          Damon
Plan – The Damon Corporation Savings Plus Retirement Plan, the assets and
liabilities of which have been transferred to this Plan.

          Deferral
Compensation – An Employee’s wages as defined in Code Section 3401(a) and
all other payments of compensation to an Employee by an Employer (in the course
of the Employer’s trade or business) for which the Employer is required to
furnish the Employee a written statement under Code Sections 6041(d),
6051(a)(3) and 6052, excluding reimbursements or other expense allowances, cash
and non-cash fringe benefits (e.g., employee discounts), moving expenses,
deferred compensation and welfare benefits, plus Employee Pre-Tax
Contributions, salary reduction contributions to a Code Section 125 cafeteria
plan and pre-tax contributions to purchase qualified transportation fringe
benefits pursuant to Code Section 132(f)(4). 

          Notwithstanding
the preceding paragraph, (1) effective with the September 3, 1999 pay date,
Deferral Compensation shall include amounts (e.g., bonuses, commissions or
unused vacation) paid by the Employer following the Employee’s termination of
employment with the Employer, but only if such amounts are paid no later than
30 days after the Employee’s termination of employment; (2) Deferral Compensation
shall not include severance pay; and (3) Deferral Compensation shall not
include compensation generated from any of the following: the disqualifying
disposition of a statutory stock option; the disposition of shares of stock
under an employee stock purchase plan if the option price was below the fair
market value of the stock at the time the option was granted; the value of a
nonstatutory stock option at the time of grant or exercise; the vesting of
restricted stock; or the payment of dividends on restricted stock.

          Effective
January 1, 2002, Deferral Compensation in excess of $200,000 (or such different
amount as may be applicable under Code Section 401(a)(17)(B)) for any Plan Year
shall not be taken into account.

          DeYor
Plan – The DeYor Laboratories 401(k) Profit Sharing Plan and Trust, the
assets and liabilities of which have been transferred to this Plan.

6

          Discretionary
Contributions – Contributions made by an Employer under Section 3.3.

          Effective
Date – The Plan was effective October 1, 1973. Except as otherwise
specified, this amendment and restatement is effective January 1, 2007. The
Effective Date for each Employer is set forth in Appendix A.

          Eligibility
Service

          (a)
As of any date, the aggregate of an Employee’s periods of eligibility service
(as defined in the next sentence), including any eligibility service credited
under subsection (b). For purposes of this subsection (a), a period of
eligibility service is each period of time required to be recognized under this
Plan commencing on the Employee’s Employment Commencement Date, or any
subsequent Reemployment Commencement Date, and ending on a Severance from
Service Date.

          (b)
Eligibility service shall also include the following:

                    (1)
Periods of employment with an Affiliate (while such organization is an
Affiliate) which would have constituted eligibility service under the Plan had
the Participant been employed by an Employer; 

                    (2)
Periods of employment with an Employer other than as an Employee, including
employment as a leased employee within the meaning of Code Section 414(n),
which would have constituted eligibility service under the Plan had the
Participant been employed as an Employee; provided, however, that employment as
a leased employee within the meaning of Code Section 414(n) shall not be taken
into account if more than five calendar days elapses between the last day of
employment as a leased employee and the Employment Commencement Date; 

                    (3)
Periods of employment with an Employer prior to the Employer’s Effective Date
which would have constituted eligibility service under the Plan had the service
been rendered after the Employer’s Effective Date, under rules promulgated by
the Committee applied in a uniform and nondiscriminatory manner, and to the
extent permitted by applicable law;

                    (4)
Periods of employment with the sponsor of a Merged Plan prior to the Merged
Plan’s Merger Date which would have constituted eligibility service under the
Plan had the service been rendered after the Merged Plan’s Merger Date, under
rules promulgated by the 

7

Committee applied in a uniform and nondiscriminatory
manner, and to the extent permitted by applicable law;

                    (5)
With respect to any person employed by an Employer that is a joint venture,
periods of contiguous employment with the joint venture partner of the
Corporation (or a subsidiary thereof) prior to the establishment of the joint
venture which would have constituted eligibility service under the Plan had the
service been rendered after the establishment of the joint venture, under rules
promulgated by the Committee applied in a uniform and nondiscriminatory manner,
and to the extent permitted by applicable law;

                    (6)
With respect to an Employee who directly transferred employment to the Employer
from a joint venture with the Corporation (or a subsidiary thereof) that is not
an Employer, (A) periods of contiguous employment with the joint venture which
would have constituted eligibility service under the Plan had the joint venture
been an Employer, and (B) periods of contiguous employment with the joint
venture partner of the Corporation (or subsidiary) prior to the establishment
of the joint venture which would have constituted eligibility service under the
Plan had the partner been an Employer, both periods of employment credited
under rules promulgated by the Committee applied in a uniform and
nondiscriminatory manner, and to the extent permitted by applicable law;

                    (7)
Periods of qualified military service required under Code Section 414(u);
and

                    (8)
Periods of employment with an entity which adopts this Plan and who is not a
member of the Quest Diagnostics Incorporated Controlled Group under Code
Sections 414(b), (c), (m) or (o).

          In no event shall Eligibility Service be credited
under more than one paragraph of this subsection (b).

          Eligible
Employee – An Employee eligible for participation under Section 2.1.

          Employee
– Any common-law employee of the Corporation or of any other Employer.
Notwithstanding the preceding sentence, the following shall not be considered
an Employee for purposes of this Plan: (1) any individual who is classified as
an “independent contractor” or “consultant” by an Employer, regardless of such
individual’s reclassification for any reason by the Internal Revenue Service or
any governmental agency or any other entity; (2) any person who is covered by a
collective bargaining agreement where such agreement provides for a

8

different retirement plan, or where no provision is
made for any retirement plan after good faith bargaining between the Employer
and employee representatives; (3) any person who is excluded from participation
hereunder by the terms of his Employer’s adoption of this Plan; (4) any leased
employee of an Employer within the meaning of Code Section 414(n) (other than a
leased employee of a joint venture Employer who is leased from another
Employer); (5) any employee who is a nonresident alien and who receives no
earned income (within the meaning of Code Section 911(d)(2)) from the Employer
which constitutes income from sources within the United States (within the meaning
of Code Section 861(a)(3)); (6) any person who receives compensation solely for
service as a member of the Board; or (7) after August 15, 1999, any person
employed in Puerto Rico shall not be considered an Employee and shall be
ineligible to participate in the Plan for purposes of any contributions
including Employee Pre-Tax Contributions, Employer Matching Contributions and
Discretionary Contributions.

          Employee
After-Tax Sub-Account – That portion of a Participant’s Individual Account
attributable to the Employee After-Tax Contributions allocated to such
Participant prior to January 1, 1996 and any earnings or losses on such
contributions. The Employee After-Tax Sub-Account of a Participant who was a
participant in a Merged Plan that permitted after-tax contributions shall also
hold any amount transferred to this Plan from such Merged Plan representing the
balance of such Participant’s after-tax account under such Merged Plan and
earnings and losses thereon.

          Employee
Pre-Tax Catch-Up Sub-Account – That portion of a Participant’s Individual
Account attributable to the Catch-Up Pre-Tax Contributions allocated to such
Participant under Section 4.2 and any earnings or losses on such contributions.

          Employee
Pre-Tax Contributions – Regular Pre-Tax Contributions and Catch-Up Pre-Tax
Contributions made to the Plan by the Employer under Section 3.1 pursuant to
salary reduction agreements entered into between the Employer and the
Participant.

          Employee
Regular Pre-Tax Sub-Account – That portion of a Participant’s Individual
Account attributable to the Regular Pre-Tax Contributions allocated to such
Participant under Section 4.2 and any earnings or losses on such contributions.
The Employee Regular Pre-Tax Sub-Account of a Participant who was a participant
in a Merged Plan that contained a qualified cash or deferred arrangement shall
also hold any amount transferred to this Plan from such

9

Merged Plan representing the balance of such
Participant’s pre-tax account under such Merged Plan and any earnings and
losses thereon.

          Employer
– Collectively or individually as the context may indicate, the Corporation and
any other entity which has been authorized by the Board to adopt the Plan and
by action of its own board of directors as specified in Section 10.1 has
adopted the Plan or any successor to one or more of such entities. As of
January 1, 2007, the following entities were Employers:

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Incorporated (DE)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Incorporated (MI)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics LLC (CT)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics of Pennsylvania Inc. (DE)

	
 

	
 

	
 

	
 

	
•

	
MetWest Inc. dba Quest Diagnostics

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics LLC (MA)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Incorporated (MD)

	
 

	
 

	
 

	
 

	
•

	
Nichols Institute Diagnostics (CA)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Incorporated (CA)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics LLC (IL)

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Clinical Laboratories, Inc. (DE)
 (f/k/a SmithKline Beecham Clinical Laboratories, Inc.) 

	
 

	
 

	
 

	
 

	
•

	
MedPlus, Inc.

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Nichols Institute Inc.

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Incorporated (NV)

	
 

	
 

	
 

	
 

	
•

	
Associated Pathologists, Chartered

	
 

	
 

	
 

	
 

	
•

	
Quest Diagnostics Venture LLC (PA) (a joint venture)

	
 

	
 

	
 

	
 

	
•

	
Diagnostic Laboratory of Oklahoma (a joint venture)

	
 

	
 

	
 

	
 

	
•

	
Associated Diagnostic Pathologists, Inc.

	
 

	
 

	
 

	
 

	
•

	
Associated Pathologists, Chartered

	
 

	
 

	
 

	
 

	
•

	
LabOne, Inc.

          Employer
Matching Contributions – Contributions made to the Plan by the Employer
under Section 3.2.

          Employer
Matching Sub-Account – That portion of a Participant’s Individual Account
attributable to the Employer Matching Contributions allocated to such
Participant under

10

Section 4.3 and invested in one or more of the
Investment Options at the direction of the Participant, and any earnings and
losses on such contributions. The Employer Matching Sub-Account of a
Participant who was formerly a participant in the Maryland Medical Laboratory
Plan also shall hold any amount transferred to this Plan from the Maryland
Medical Laboratory Plan representing matching company contributions and
discretionary company contributions made to the Maryland Medical Laboratory
Plan and any earnings and losses thereon.

          Employer
Stock – Any class of the Corporation’s common stock or the Corporation’s
preferred stock that is convertible into common stock. 

          Employer
Stock Fund – A stock fund investing primarily in Employer Stock.

          Employer
Stock Matching Contributions – That portion of the Employer Matching
Contribution made prior to January 1, 2000 that, pursuant to Section 3.2, was
mandatorily invested in Employer Stock prior to January 1, 2002.

          Employer
Stock Matching Sub-Account – That portion of a Participant’s Individual
Account attributable to Employer Stock Matching Contributions, and any earnings
and losses on such contributions.

          Employment
Commencement Date – The later of (1) the date on which an Employee first
performs an hour of service for an Employer, or (2) the Effective Date of the
Employee’s Employer.

          ERISA
– The Employee Retirement Income Security Act of 1974, as amended.

          ESOP
Diversification Sub-Account – That portion of a Participant’s Individual
Account attributable to the amounts transferred to this Plan from the Quest
Diagnostics Incorporated Employee Stock Ownership Plan pursuant to a
diversification election under Code Section 401(a)(28), and earnings or losses
on such amounts.

          Fiduciary
– The Corporation, the Employer, the Trustee, the Committee and any individual,
corporation, firm or other entity which assumes, in accordance with Article
VIII, responsibilities of the Corporation, the Employer, the Trustee or the
Committee respecting management of the Plan or the disposition of its assets.

          Forfeitures
– Amounts forfeited pursuant to Section 5.5(b)(3).

          Fund
– The Trust Fund.

11

          Highly
Compensated Employee – For any Plan Year, any employee who (a) during the
current Plan Year or the immediately preceding Plan Year was at any time a
5-percent owner (as defined in Code Section 416(i)(1); or (b) during the
immediately preceding Plan Year received compensation (as defined in Code
Section 414(q)(4)) from an Employer or an Affiliate in excess of $100,000 (as
adjusted under Code Section 414(q)(1)).

          A
former employee shall be treated as a Highly Compensated Employee if such
employee was a Highly Compensated Employee (a) when such employee separated
from service with the Employer, or (b) at any time after attaining age 55.

          Individual
Account – The
aggregate of a Participant’s Employee Regular Pre-Tax Sub-Account, Employee
Pre-Tax Catch-Up Sub-Account, Employee After-Tax Sub-Account, Employer Matching
Sub-Account, Employer Stock Matching Sub-Account, Partnership Sub-Account,
Rollover Sub-Account, Prior Plan Rollover Sub-Account, Pre-1999 Cash Match
Sub-Account, Post-1999 Cash Match Sub-Account, Pre-1999 Stock Match
Sub-Account, Post-1999 Stock Match Sub-Account, ESOP Diversification
Sub-Account, Prior ESOP Employer Contributions Sub-Account, Prior ESOP Employer
Stock Sub-Account, Money Purchase Pension Plan Sub-Account, Prior Plan Employer
Contribution Sub-Account, Prior Plan Employer Qualified Sub-Account, CBCLS
Employer Contribution Sub-Account, Prior Employer Match Sub-Account, Prior
Profit Sharing Sub-Account, Prior Unilab Employer Contribution Sub-Account,
Qualified Nonelective Contribution Sub-Account, Prior LabOne Employer Match
Sub-Account, Prior LabOne Money Purchase Plan Sub-Account, Vested Employer
Stock Dividend Sub-Account and Vested Money Purchase Plan Dividend Sub-Account.

          Investment
Option – The investment vehicle elected by the Participant in accordance
with Section 2.4 for investment of his Individual Account.

          Prior
to June 2, 2003, the Investment Options were the following: Fidelity
Contrafund, Fidelity Diversified International Fund, Fidelity Equity-Income
Fund, Fidelity Growth & Income Portfolio, Fidelity Low Priced Stock Fund,
Fidelity Magellan Fund, Fidelity OTC Portfolio, Fidelity Puritan Fund, Fidelity
Spartan U.S. Equity Index Fund, Fidelity U.S. Bond Index Fund, the Managed
Income Portfolio, the Managed Income Portfolio II, the Employer Stock Fund, the
Corning Stock Fund and the Covance Fund. 

          Effective
June 2, 2003, the following Investment Options were added: The Fidelity Freedom
Income Fund; the Fidelity Freedom 2000 Fund; the Fidelity Freedom 2010 Fund;
the

12

Fidelity Freedom 2020 Fund; the Fidelity Freedom 2030
Fund; and the Fidelity Freedom 2040 Fund.

          Notwithstanding
the preceding, (i) effective July 30, 2004, the Managed Income
Portfolio II Class 3 was added as a new Investment Option and no new
contributions or transfers may be made to the Managed Income Portfolio II Class
2; (ii) effective July 30, 2004, any remaining Individual Accounts (or portions
thereof) invested in the Managed Income Portfolio II Class 2 were automatically
transferred to the Managed Income Portfolio II Class 3; and (iii) effective
July 30, 2004, no new contributions or transfers may be made to the Fidelity
Low Priced Stock Fund.

          Notwithstanding
the preceding, (i) effective September 1, 2005, the following Investment
Options were added: The Fidelity Freedom 2005 Fund; the Fidelity Freedom 2015
Fund; the Fidelity Freedom 2025 Fund; the Fidelity Freedom 2035 Fund; and the
Lord Abbett Small-Cap Value Fund (Class Y); (ii) effective December 1, 2005, no
new contributions or transfers may be made to the Fidelity Magellan Fund, and
any remaining Individual Accounts (or portions thereof) invested in the
Fidelity Magellan Fund as of such date automatically will be transferred to the
Fidelity Spartan U.S. Equity Index Fund.

          Notwithstanding
the preceding provisions of this definition, (i) effective October 2, 2006, the
following Investment Options were added: T. Rowe Price Institutional Large-Cap
Growth Fund; the Fidelity Freedom 2045 Fund; and the Fidelity Freedom 2050
Fund; (ii) effective December 29, 2006, the Corning Stock Fund and Covance
Stock Fund are eliminated as Investment Options.

          LabOne
(k) Plan – The LabOne, Inc. Profit Sharing 401(k) Plan, the assets and
liabilities of which have been transferred to this Plan.

          LabOne
(k) Plan Participant – A Participant who was formerly a Participant in the
LabOne (k) Plan.

          LabOne
Pension Plan – The LabOne, Inc. Money Purchase Pension Plan, the assets and
liabilities of which have been transferred to this Plan.

          LabOne
Pension Plan Participant – A Participant who was formerly a Participant in
the LabOne Pension Plan.

          LabPortal
Plan – The LabPortal, Inc. 401(k) Plan, the assets and liabilities of which
have been transferred to this Plan.

13

          LabPortal
Plan Participant – A Participant who was formerly a participant in the
LabPortal Plan.

          Limitation
Year – January 1 – December 31.

          Maryland
Medical Laboratory Plan – The Maryland Medical Laboratory, Inc. 401(k)
Profit Sharing Plan and Trust, the assets and liabilities of which have been
transferred to this Plan.

          MedPlus
Plan – The MedPlus, Inc. 401(k) Plan, the assets and liabilities of which
have been transferred to this Plan.

          MedPlus
Plan Participant – A Participant who was formerly a participant in the
MedPlus Plan.

          Merged
Plan – The Advance Medical Plan, the AML-East Plan, the AML-West Plan, the
CBCLS Plan, the CDS Plan, the CPF Pension Plan, the CPF Savings Plan, the Damon
Plan, the DeYor Plan, the LabPortal Plan, the Maryland Medical Laboratory Plan,
the MedPlus Plan, the MetWest Plan, the Nichols Institute Plan, the Podiatric
Pathology Laboratories Plan, the Statlab Plan, the Unilab Plan, the LabOne (k)
Plan, and the LabOne Pension Plan, either individually or collectively as the
case may be.

          Merger
Date – The Merger Date for each Merged Plan is set forth in Appendix B.

          MetWest
Plan – The Profit Sharing Plan and Trust Agreement for Employees of MetWest
Inc., the assets and liabilities of which have been transferred to this Plan.

          Money
Purchase Pension Plan Sub-Account – The Money Purchase Pension Plan
Sub-Account of a Participant who was formerly a participant in the CPF Pension
Plan shall hold any amount transferred to this Plan from the CPF Pension Plan
representing employer contributions made to the CPF Pension Plan and any
earnings and losses thereon.

          Net
Asset Value – With respect to any mutual fund that the Committee may
designate as an available Investment Option, the total net assets of the
respective fund divided by the number of outstanding shares of the respective
fund.

          Nichols
Institute Plan – The Nichols Institute 401(k) Plan, the assets and
liabilities of which have been transferred to this Plan.

          Normal
Retirement Age – Age 65.

14

          Participant
– Any Employee or former Employee who has an Individual Account balance and any
Employee who has met the eligibility requirements of Section 2.1. Participation
ends in accordance with Section 2.2.

          Partnership
Sub-Account – That portion of a Participant’s Individual Account
attributable to the Discretionary Contributions allocated to such Participant
under Section 4.4 and any earnings or losses on such contributions. The
Partnership Sub-Account of a Participant who was formerly a participant in the
Damon Plan shall also hold any amount transferred to this Plan from the Damon
Plan representing “Long Term Savings Contributions” made to the Damon Plan on
his behalf and earnings and losses thereon. The Partnership Sub-Account of a
Participant who was a participant in the MetWest Plan shall also hold any
amount transferred to this Plan from the MetWest Plan representing that portion
of such Participant’s “Incentive Contribution Account” under the MetWest Plan
which consisted of non-matching “Incentive Contributions” and earnings and
losses thereon.

          Period
of Severance – The period of time commencing on an Employee’s Severance
from Service Date and ending on his Reemployment Commencement Date.

          Plan
– The Profit Sharing Plan of Quest Diagnostics Incorporated, contained herein
or as duly amended. Prior to December 31, 1996, the Plan was known as the
Profit Sharing Plan of Corning Life Sciences Inc. Prior to January 1, 1996, the
Plan was known as the Profit Sharing Plan of MetPath Inc. Prior to January 1,
1994, the Plan was known as the Profit Sharing Plan of Corning Lab Services
Inc. Prior to October 31, 1992, the Plan was known as the Profit Sharing Plan
of MetPath Inc.

          Plan
Year – January 1 – December 31.

          Podiatric
Pathology Laboratories Plan – The Podiatric Pathology Laboratories, Inc.
Profit Sharing Plan, the assets and liabilities of which have been transferred
to this Plan.

          Post-1999
Cash Match Sub-Account – That portion of a Participant’s Employer Matching
Sub-Account attributable to Employer Matching Contributions allocated to such
Participant under Section 4.3 after December 31, 1998, and any earnings or
losses on such contributions.

          Post-1999
Stock Match Sub-Account – That portion of a Participant’s Employer Stock
Matching Sub-Account attributable to Employer Stock Matching Contributions
allocated to such Participant under Section 4.3 after December 31, 1998 and
prior to January 1, 2000, and any earnings or losses on such contributions.

15

          Pre-1999
Cash Match Sub-Account – That portion of a Participant’s Employer Matching
Sub-Account attributable to Employer Matching Contributions allocated to such
Participant under Section 4.3 prior to January 1, 1999, and any earnings or
losses on such contributions.

          Pre-1999
Stock Match Sub-Account – That portion of a Participant’s Employer Stock
Matching Sub-Account attributable to Employer Stock Matching Contributions
allocated to such Participant under Section 4.3 prior to January 1, 1999, and
any earnings or losses on such contributions.

          Prime
Rate – The “prime rate,” as published in The Wall Street Journal.

          Prior
Employer Match Sub-Account – That portion of the Individual Account of an
AML-East Plan Participant attributable to employer matching contributions and
employer discretionary contributions made to the AML-East Plan and earnings or
losses thereon, and that portion of the Individual Account of an AML-West Plan
Participant attributable to employer matching contributions made to the
AML-West Plan and earnings or losses thereon.

          Prior ESOP Employer Contributions Sub-Account
– That portion of a Participant’s Individual
Account attributable to the amount transferred to this Plan from the Quest
Diagnostics Incorporated Employee Stock Ownership Plan representing the
Participant’s “Discretionary Contribution Sub-Account” under the Quest
Diagnostics Incorporated Employee Stock Ownership Plan.

          Prior ESOP Employer Stock Sub-Account – That
portion of a Participant’s Individual
Account attributable to the amount transferred to this Plan from the Quest
Diagnostics Incorporated Employee Stock Ownership Plan representing the
Participant’s “Initial Contribution Sub-Account” under the Quest Diagnostics
Incorporated Employee Stock Ownership Plan.

          Prior LabOne Money Purchase Plan Sub-Account
– That portion of a Participant’s Individual
Account that is attributable to the Participant’s account under the LabOne,
Inc. Money Purchase Pension Plan.

          Prior LabOne Employer Match Sub-Account –
That portion of a Participant’s Individual
Account that is attributable to the Participant’s match account under the
LabOne, Inc. Profit Sharing 401(k) Plan.

          Prior
Plan Employer Contribution Sub-Account – The Prior Plan Employer
Contribution Sub-Account of a Participant who was a participant in the DeYor
Plan shall hold any amount

16

transferred to this Plan from the DeYor Plan
representing discretionary contributions and employer matching contributions
made to the DeYor Plan and any earnings and losses thereon. The Prior Plan
Employer Contribution Sub-Account of a Participant who was a participant in the
MedPlus Plan shall hold any amount transferred to this Plan from the MedPlus
Plan representing employer matching contributions and profit sharing
contributions made to the MedPlus Plan and any earnings and losses thereon. The
Prior Plan Employer Contribution Sub-Account of a Participant who was a
participant in the Unilab Plan shall hold any amount transferred to this Plan
from the Unilab Plan representing amounts that were previously transferred to
the Unilab Plan from the terminated Associated Laboratories, Inc. defined
benefit plan and earnings and losses thereon.

          Prior
Plan Employer Qualified Sub-Account – The Prior Plan Employer Qualified
Sub-Account of a Participant who was a participant in the CBCLS Plan shall hold
any amount transferred to this Plan from the CBCLS Plan representing qualified
nonelective contributions and qualified matching contributions made to the
CBCLS Plan and any earnings and losses thereon.

          Prior
Plan Rollover Sub-Account – For a MedPlus Plan Participant, a LabPortal
Plan Participant, an AML-East Plan Participant, an AML-West Plan Participant, a
Unilab Plan Participant, a LabOne (k) Plan Participant, or a LabOne Pension
Plan Participant, that portion of the Individual Account attributable to
rollover contributions made to the predecessor plan and earnings or losses
thereon.

          Prior
Profit Sharing Sub-Account – That portion of the Individual Account of an
AML-West Plan Participant attributable to employer profit sharing contributions
made to the AML-West Plan and earnings or losses thereon.

          Prior
Unilab Employer Contribution Sub-Account – That portion of the Individual
Account of a Unilab Plan Participant attributable to: (1) matching
contributions and employer partnership contributions made to the Unilab Plan
and earnings or losses thereon; (2) profit sharing contributions made to the
Associated Laboratories, Inc. 401(k) Plan that were subsequently transferred to
the Unilab Plan, and earnings and losses thereon; and (3) matching
contributions and profit sharing contributions made to the Profit Sharing Plan
of Employees of Medical Laboratory Network, Inc. that were subsequently
transferred to the Unilab Plan, and earnings and losses thereon.

17

          Qualified
Nonelective Contribution Sub-Account – That portion of a Participant’s
Individual Account attributable to “qualified nonelective contributions” made
pursuant to Section 3.12 and any earnings or losses thereon.

          Reemployment
Commencement Date – The first date on which an Employee again performs an
hour of service following a Period of Severance.

          Regular
Pre-Tax Contributions – Contributions made to the Plan by the Employer
under Section 3.1(a) pursuant to a salary reduction agreement entered into
between the Employer and the Participant.

          Rollover
Sub-Account – That portion of a Participant’s Individual Account
attributable to his rollover contributions under Section 3.4 and any earnings
or losses on such contributions. The Rollover Sub-Account of a Participant who
was an active participant in the CBCLS Plan on December 31, 1991 also shall
hold any amount transferred to this Plan from the CBCLS Plan representing
employer matching contributions and discretionary contributions made to the
CBCLS Plan and any earnings and losses thereon. The Rollover Sub-Account of a
Participant who was formerly a participant in the CPF Savings Plan also shall
hold any amount transferred to this Plan from the CPF Savings Plan representing
employer matching contributions made to the CPF Savings Plan and any earnings
and losses thereon. The Rollover Sub-Account of a Participant who was formerly
a participant in the Statlab Plan also shall hold any amount transferred to
this Plan from the Statlab Plan representing employer contributions made to the
Statlab Plan and earnings and losses thereon. The Rollover Sub-Account of a
Participant who was formerly a participant in the Damon Plan also shall hold
any amount transferred to this Plan from the Damon Plan representing matching
contributions and rollover contributions made to the Damon Plan and any
earnings and losses thereon. The Rollover Sub-Account of a Participant who was
formerly a participant in the Podiatric Pathology Laboratories Plan also shall
hold any amount transferred to this Plan from the Podiatric Pathology
Laboratories Plan representing employer contributions made to the Podiatric
Pathology Laboratories Plan and earnings and losses thereon. The Rollover
Sub-Account of a Participant who was formerly a participant in the Nichols
Institute Plan also shall hold any amount transferred to this Plan from the
Nichols Institute Plan representing matching contributions, rollover
contributions and qualified nonelective contributions made to the Nichols
Institute Plan and any earnings and losses thereon.

18

          Section
415 Compensation – An Employee’s wages as defined in Code Section 3401(a)
and all other payments of compensation to an Employee by an Employer (in the
course of the Employer’s trade or business) for which the Employer is required
to furnish the Employee a written statement under Code Sections 6041(d),
6051(a)(3) and 6052. Section 415 Compensation shall be determined without
regard to any rules that limit the remuneration included in wages based on the
nature or location of the employment or the services performed (such as the
exception for agricultural labor in Code Section 3401(a)(2)). Effective January
1, 1998, Section 415 Compensation also includes Employee Pre-Tax Contributions
to this Plan and salary reduction contributions to a Code Section 125 cafeteria
plan, and effective January 1, 2001, Section 415 Compensation also
includes pre-tax contributions to purchase qualified transportation fringe
benefits pursuant to Code Section 132(f)(4).

          Severance
From Service Date – (a) Except as provided in subsection (b), the earlier
of (1) or (2): 

                    (1)
The date on which the Employee quits, retires, is discharged or dies provided
he does not earn an hour of service for an Employer or Affiliate within 12
months after such date; or 

                    (2)
The first anniversary of the first date of a period in which an Employee
remains absent from service (with or without pay) with an Employer or Affiliate
for any reason other than quit, retirement, discharge or death, such as
vacation, holiday, sickness, disability or leave of absence.

          (b)
(1) For purposes of determining the Severance from Service Date of an Employee
who is absent from work beyond the first anniversary of the first day of
absence by reason of a Parenthood Purpose described in paragraph (2), such
Severance from Service Date shall be the second anniversary of the first day of
such absence. The period between the first and second anniversaries of the
first day of absence from work is neither a period credited as a Year of
Vesting Service nor a Period of Severance. The Committee may request that the
Employee furnish information to establish that the absence is for a Parenthood
Purpose and the number of days for which there was such an absence. In the
event such information is not submitted in a timely manner, this subsection (b)
shall not apply. 

                    (2)
The following shall be deemed Parenthood Purposes: 

                              (A)
the pregnancy of the Employee,

19

                              (B)
the birth of a child of the Employee, 

                              (C)
the placement of a child with the Employee in connection with the adoption of
such child by such Employee, or 

                              (D)
caring for such child for a period beginning immediately following such birth
or placement.

          Statlab
Plan – The Statlab, Inc. Retirement Plan, the assets and liabilities of
which have been transferred to this Plan.

          Total
and Permanent Disability – A Participant shall be considered totally and
permanently disabled once the Committee, in its sole discretion, determines
that he has incurred a disability which renders him totally and permanently
unable to satisfactorily perform his usual duties for his Employer or the
duties of such other position which the Employer makes available to him and for
which he is qualified by reason of his training, education or experience. Such
determination shall be made by the Committee based on medical reports and such
other evidence which the Committee determines to be satisfactory; provided,
however, that conclusive evidence that the Participant is eligible for and is
receiving disability benefits under the provisions of the Federal Social
Security Act shall be sufficient to deem the Participant totally and
permanently disabled.

          Trust
Agreement – The agreement entered into between the Employer and the Trustee
under Article VII.

          Trust
Fund – All funds received by the Trustee together with all income, profits
and increments thereon, and less any expenses or payments made out of the Trust
Fund.

          Trustee
– Such individual, individuals, financial institution, or a combination of them
as shall be designated in the Trust Agreement to hold in trust any assets of
the Plan for the purpose of providing benefits under the Plan, and shall include
any successor trustee to the Trustee initially designated thereunder.

          Unilab
Plan – The Unilab 401(k) Plan, the assets and liabilities of which have
been transferred to this Plan.

          Unilab
Plan Participant – A Participant who was formerly a participant in the
Unilab Plan.

20

          Valuation
Date – The date on which a Participant’s Individual Account is valued
pursuant to Section 5.10. Subject to Section 5.10(b), the Valuation Date shall
be a date that falls as soon as administratively feasible after an Appropriate
Request for a distribution is made.

          Vested Employer Stock Dividend Sub-Account –
That portion of a Participant’s Individual
Account that is comprised of cash dividends received under Section 6.5(a) which
are associated with the Employer Stock Fund and the Participant’s Prior LabOne
Employer Match Sub-Account, Prior ESOP Employer Contributions Sub-Account,
Prior Employer Match Sub-Account and Prior Unilab Employer Contribution
Sub-Account. 

          Vested Money Purchase Plan Dividend
Sub-Account – That portion
of a Participant’s Individual Account that is comprised of cash dividends
received under Section 6.5(b) which are associated with the Employer Stock Fund
and the Participant’s Prior LabOne Money Purchase Plan Sub-Account.

          Year
of Vesting Service

          
(a) As of any date, the aggregate of an Employee’s periods of vesting service,
including any vesting service credited under subsection (b) and excluding any
vesting service disregarded under subsection (c). For purposes of this
subsection (a), a period of vesting service is each period of time required to
be recognized under this Plan commencing on the Employee’s Employment
Commencement Date, or any subsequent Reemployment Commencement Date, and ending
on a Severance from Service Date.

          
(b) Vesting service shall also include the following:

                    (1)
Periods of employment with an Affiliate (while such organization is an
Affiliate) which would have constituted vesting service under the Plan had the
Participant been employed by an Employer; 

                    (2)
Periods of employment with an Employer other than as an Employee, including
employment as a leased employee within the meaning of Code Section 414(n),
which would have constituted vesting service under the Plan had the Participant
been employed as an Employee; provided, however, that employment as a leased
employee within the meaning of Code Section 414(n) shall not be taken into
account if more than five calendar days elapses between the last day of
employment as a leased employee and the Employment Commencement Date; 

21

                    (3)
Periods of employment with an Employer prior to the Employer’s Effective Date
which would have constituted vesting service under the Plan had the service
been rendered after the Employer’s Effective Date, under rules promulgated by
the Committee applied in a uniform and nondiscriminatory manner, and to the
extent permitted by applicable law;

                    (4)
Periods of employment with the sponsor of a Merged Plan prior to the Merged
Plan’s Merger Date which would have constituted vesting service under the Plan
had the service been rendered after the Merged Plan’s Merger Date, under rules
promulgated by the Committee applied in a uniform and nondiscriminatory manner,
and to the extent permitted by applicable law;

                    (5)
With respect to any person employed by an Employer that is a joint venture,
periods of contiguous employment with the joint venture partner of the
Corporation (or a subsidiary thereof) prior to the establishment of the joint
venture which would have constituted vesting service under the Plan had the
service been rendered after the establishment of the joint venture, under rules
promulgated by the Committee applied in a uniform and nondiscriminatory manner,
and to the extent required by applicable law;

                    (6)
With respect to an Employee who directly transferred employment to the Employer
from a joint venture with the Corporation (or a subsidiary thereof) that is not
an Employer, (A) periods of contiguous employment with the joint venture which
would have constituted vesting service under the Plan had the joint venture
been an Employer, and (B) periods of contiguous employment with the joint
venture partner of the Corporation (or subsidiary) prior to the establishment
of the joint venture which would have constituted vesting service under the
Plan had the partner been an Employer, both periods of employment credited
under rules promulgated by the Committee applied in a uniform and
nondiscriminatory manner, and to the extent permitted by applicable law; 

                    (7)
With respect to any person employed by the Employer on or before December 31,
1998, periods of employment with Corning Incorporated or Corning Pharmaceutical
Services Inc., which are contiguous with a transfer of employment from Corning
Incorporated or Corning Pharmaceutical Services Inc. to an Employer and which
would have constituted vesting service under the Plan had the service been
rendered after the transfer of employment;

22

                    (8)
Periods of qualified military service required under Code Section 414(u);
and

                    (9)
Periods of employment with an entity which adopts this Plan and who is not a
member of the Quest Diagnostics Incorporated controlled group under Code
Sections 414(b), (c), (m) or (o).

          (c)
In no event shall Years of Vesting Service be credited under more than one
paragraph of subsection (b).

          (d)
If a Merged Plan determines Years of Vesting Service under an hours counting
methodology, then Years of Vesting Service shall be determined under the
methodology, hours counting or elapsed time, whichever results in the greater
vesting percentage.

23

ARTICLE II
ELIGIBILITY
AND PARTICIPATION

2.1 Eligibility

          (a)
Any Employee who was a Participant in this Plan on December 31, 2006 shall
remain a Participant on January 1, 2007, as long as he remains an Employee on
such date. Such an Employee shall remain eligible to make Employee Pre-Tax
Contributions and to receive Employer Matching Contributions and Discretionary
Contributions.

          (b)
Any Employee who was not a Participant in this Plan on December 31, 2006 shall
become a Participant on the date he completes one month of Eligibility Service.
Such an Employee shall become eligible to make Employee Pre-Tax Contributions
on the date he becomes a Participant and shall become eligible to receive
Employer Matching Contributions and Discretionary Contributions on the date he
completes 12 months of Eligibility Service.

2.2 Participation

          (a)
Each Employee who is a Participant may, by making an Appropriate Request, enter
into a salary reduction agreement in accordance with Section 3.1(a).

          (b)
Each person who becomes a Participant shall remain a Participant so long as he
remains an Employee or maintains an Individual Account balance. If a
Participant terminates employment with no balance in his Individual Account, he
shall cease being a Participant upon his termination of employment.

          (c)
If an Employee who was formerly a Participant terminates employment and is
subsequently reemployed as an Employee, he shall become a Participant upon his
Reemployment Commencement Date. Such an Employee shall become eligible to make
Employee Pre-Tax Contributions upon his Reemployment Commencement Date and
shall become eligible to receive Employer Matching Contributions and
Discretionary Contributions on the later of (1) his Reemployment Commencement
Date, or (2) the date he completes 12 months of Eligibility Service (taking
into account Eligibility Service both before and after his Reemployment
Commencement Date).

          (d)
If an Employee who was not formerly a Participant terminates employment and is
subsequently reemployed as an Employee, he shall become a Participant on the
later of (1) his Reemployment Commencement Date, or (2) the date he completes
one month of Eligibility

24

Service (taking into account Eligibility Service both
before and after his Reemployment Commencement Date). Such an Employee shall
become eligible to make Employee Pre-Tax Contributions on the date he becomes a
Participant and shall become eligible to receive Employer Matching
Contributions and Discretionary Contributions on the date he completes 12
months of Eligibility Service (taking into account Eligibility Service both
before and after his Reemployment Commencement Date).

2.3 Beneficiary Designation

          (a)
Upon commencing participation, each Participant shall designate a Beneficiary
by filing a properly completed form with the Committee. In the absence of any
valid designation of Beneficiary, the Participant shall be deemed to have
designated his spouse as his Beneficiary, and if the Participant is unmarried
upon his death, he shall be deemed to have designated the following as his
Beneficiary: (1) the beneficiary designated under the group-term life insurance
plan sponsored by the Corporation; and (2) if no beneficiary has been
designated under the group-term life insurance plan sponsored by the
Corporation, the Participant’s estate. (Prior to August 16, 1999, in the
absence of any valid designation of Beneficiary, the Participant shall be
deemed to have designated his spouse as his Beneficiary, and if the Participant
is unmarried upon his death, he shall be deemed to have designated his estate
as his Beneficiary.)

          (b)
The Beneficiary of a married Participant shall be his spouse unless the
Participant designates someone other than his spouse as his Beneficiary, and
the Participant files with the Committee his spouse’s written consent to such
designation. Such spousal consent shall be on a form approved by the Committee,
shall be irrevocable by the spouse, shall acknowledge the effect of such
designation and shall be witnessed by a Committee member or a notary public.
The spouse may alternatively execute an irrevocable general consent that does
not identify the designated Beneficiary and which allows the Participant to
make future changes in the Beneficiary designation without spousal consent. Any
such general consent shall satisfy the requirements of Treasury Regulation
§1.401(a)-20 Q&A-31(c).

          (c)
If an unmarried Participant later marries, or if a married Participant later
remarries, any prior designation by such Participant of a Beneficiary other
than the spouse to whom he is married on his date of death shall be null and
void unless consented to by such spouse in the manner provided in subsection
(b).

25

          (d)
The interpretation of the Committee with respect to any Beneficiary
designation, subject to applicable law, shall be binding and conclusive upon
all parties, and no person who claims to be a Beneficiary, or any other person,
shall have the right to question any action of the Committee.

          (e)
The rights of any spouse or Beneficiary hereunder shall be subject to the
provisions of any qualified domestic relations order within the meaning of
ERISA Section 206(d)(3).

2.4 Investment Option Specification

          (a)
Effective with Contributions made on or after October 1, 2005, in the absence
of any valid Investment Option specification to the contrary, a Participant’s
Individual Account automatically shall be invested in the applicable Fidelity
Freedom Fund (based on the Participant’s date of birth), unless the Committee
specifies a different Investment Option for this purpose. Commencing on the
date that is 30 days after the Employee’s date of hire with an Employer (or
such other date as the Committee shall designate), the Employee may change his
Investment Option specification in accordance with subsection (b). 

          (b)
Effective November 1, 2007, a Participant shall be limited so that no more than
twenty-five percent (25%) of contributions on a pay period basis may be
allocated to the Employer Stock Fund.

          (c)
Effective November 1, 2007, if a Participant’s Individual Account is comprised
of twenty-five percent (25%) or more of Employer Stock, no future exchanges
into the Employer Stock Fund will be permitted until Employer Stock comprises
less than twenty-five percent (25%) of the Participant’s Individual Account.
Future exchanges will then be permitted into the Employer Stock Fund but only
to the extent the allocation of Employer Stock does not exceed twenty-five
percent (25%) of the Individual Account.

          (d)
A Participant may, by making an Appropriate Request, change his Investment
Option specification with respect to Contributions to be made in the future
and/or with respect to amounts already held in his Individual Account.
Exchanges between Investment Options shall be subject to such administrative
procedures as have been adopted by the Committee. The Committee, in its sole
discretion, may modify such procedures after providing reasonable notification
to Participants.

26

2.5 Notification of Individual Account Balance

          As of the
last day of each calendar quarter, the Plan’s recordkeeper shall notify each
Participant of the amount of his share in the Contributions for the period just
completed and the balance of his Individual Account, including distributions,
loans and withdrawals, if any, since the effective date of the last statement.

27

ARTICLE
III
CONTRIBUTIONS

3.1 Employee Pre-Tax Contributions

          (a)
(1) A Participant may enter into a salary reduction agreement with his Employer
in which it is agreed that the Employer will reduce the Participant’s Deferral
Compensation during each pay period by a designated percentage and contribute
that amount so determined to the Plan on behalf of the Participant. Such
contributions shall be referred to as “Regular Pre-Tax Contributions.” The
Employer may disregard or modify a Participant’s salary reduction agreement
with respect to Regular Pre-Tax Contributions to the extent necessary to insure
that (1) the excess deferral rules of subsection (c) are met, or (2) the
limitations set forth in Sections 3.5 or 4.6 are not exceeded. Regular Pre-Tax
Contributions may be any whole percentage between 1% and 35% of the Deferral
Compensation otherwise payable to the Participant during the applicable payroll
period.

                    (2)
The salary reduction agreement of an Employee who first becomes eligible to
make Regular Pre-Tax Contributions shall be effective as of the first payroll
period coincident with or next following the date on which his Appropriate
Request is processed.

                    (3)
Regular Pre-Tax Contributions shall be invested among the various Investment
Options in accordance with the Employee’s outstanding Investment Option
election as in effect under Section 2.4.

                    (4)
A Participant who has in effect a salary reduction agreement with respect to
Regular Pre-Tax Contributions may elect to change such agreement, including
prospectively suspending such agreement, by making an Appropriate Request. Such
election shall become effective as of the first payroll period coincident with
or next following the date on which the Appropriate Request is processed.

                    (5)
Regular Pre-Tax Contributions shall be remitted to the Trustee in accordance
with Department of Labor Regulations at 29 C.F.R. §2510.3-102. Regular Pre-Tax
Contributions once elected to be deferred by a Participant shall be credited to
his Employee Regular Pre-Tax Sub-Account under Section 4.2.

          (b)
(1) Effective with the payroll period ending August 2, 2002, a Participant who
will have attained age 50 before the end of the Plan Year may enter into a
salary reduction 

28

agreement with his Employer in which it is agreed that
the Employer will reduce the Participant’s Deferral Compensation during each
pay period by a designated percentage (beyond the designated percentage by
which the Participant’s Deferral Compensation is reduced on account of a salary
reduction agreement with respect to Regular Pre-Tax Contributions) and
contribute that amount so determined to the Plan on behalf of the Participant.
Such contributions shall be referred to as “Catch-Up Pre-Tax Contributions.”
Catch-Up Pre-Tax Contributions may be any whole percentage between 1% and 35%
of the Deferral Compensation otherwise payable to the Participant during the
applicable payroll period. Catch-Up Pre-Tax Contributions shall be made in
accordance with, and subject to the limitations of, Code Section 414(v).
Catch-Up Pre-Tax Contributions shall not be taken into account for purposes of
the Code Section 402(g) limitation set forth in Section 3.1(c)(1) or the Code
Section 415 limitation set forth in Section 4.6. The Plan shall not be
treated as failing to satisfy the provisions of the Plan implementing the
requirements of Code Section 401(k)(3), 401(k)(12), 410(b), or 416, as
applicable, by reason of the making of Catch-Up Pre-Tax Contributions.

                    (2)
The salary reduction agreement of a Participant who first became eligible to
make Catch-Up Pre-Tax Contributions shall be effective as of the first payroll
period coincident with or next following the date on which his Appropriate
Request is processed.

                    (3)
Catch-Up Pre-Tax Contributions shall be invested in accordance with the
Investment Option specification designated by the Participant for the
investment of the Regular Pre-Tax Contributions.

                    (4)
A Participant who has in effect a salary reduction agreement with respect to
Catch-Up Pre-Tax Contributions may elect to change such agreement, including
prospectively suspending such agreement, by making an Appropriate Request. Such
election shall become effective as of the first payroll period coincident with
or next following the date on which the Appropriate Request is processed.

                    (5)
Catch-Up Pre-Tax Contributions shall be remitted to the Trustee in accordance
with Department of Labor Regulations at 29 C.F.R. §2510.3-102. Catch-Up Pre-Tax
Contributions once elected to be deferred by a Participant shall be credited to
his Employee Pre-Tax Catch-Up Sub-Account under Section 4.2.

                    (6)
If, by the end of a Plan Year, the amount of Employee Pre-Tax Contributions
originally designated as Regular Pre-Tax Contributions does not exceed either
the 

29

Code Section 402(g) limitation
for such Plan Year set forth in Section 3.1(c)(1), or the 35% of Deferral
Compensation set forth in Section 3.1(a)(1), or the maximum Code Section 415(c)
limitation as set forth in Section 4.6(a)(1), then any Employee Pre-Tax
Contributions made by the Participant and originally designated as Catch-Up
Pre-Tax Contributions shall be recharacterized as Regular Pre-Tax Contributions
to the extent Employee Pre-Tax Contributions originally designated as Regular
Pre-Tax Contributions and Employee Pre-Tax Contributions recharacterized as
Regular Pre-Tax Contributions do not exceed both limitations.

                    (7)
In order to make a Catch-Up Pre-Tax Contribution, a Participant must either be
making a Regular Pre-Tax Contribution of at least 6% of Deferral Compensation
or have reached the Code Section 402(g) limit.

          (c)
Excess deferrals

                    (1)
No Participant may have Regular Pre-Tax Contributions made on his behalf under
this Plan in any calendar year which in the aggregate exceed the dollar
limitation contained in Code Section 402(g) in effect for such calendar year.
For purposes of the preceding sentence, Regular Pre-Tax Contributions are
deemed made as of the pay date for which the salary is deferred, regardless of
when the contributions are actually made to the Trust Fund.

                    (2)
(A) If in any calendar year the aggregate of a Participant’s Regular Pre-Tax
Contributions made on his behalf under this Plan, plus his other elective
deferrals under any other qualified cash or deferred arrangement (as defined in
Code Section 401(k)) maintained by any sponsor, under any simplified employee
pension (as defined in Code Section 408(k)), or used to have an annuity
contract purchased on his behalf under Code Section 403(b), exceed the
limitation of paragraph (1), then no later than the March 15 following such
calendar year the Participant may notify the Committee (i) that he has exceeded
the limitation and (ii) of the amount of his Regular Pre-Tax Contributions
under this Plan which he wants distributed to him (and earnings thereon),
notwithstanding his salary reduction agreement, so that he will not exceed the
limitation. The Committee may require the Participant to provide reasonable
proof that he has exceeded the limitation of paragraph (1).

                              If
in any calendar year the aggregate of a Participant’s Regular Pre-Tax
Contributions made on his behalf under the Plan, plus his other elective
deferrals under any other qualified cash or deferred arrangement (as defined in
Code Section 401(k)) maintained by the Employer, under a simplified employee
pension (as defined in Code Section 408(k)) 

30

sponsored by the Employer, or used to have the
Employer purchase an annuity contract on his behalf under Code Section 403(b),
exceed the limitation of paragraph (1), then the Participant shall be deemed to
have notified the Committee that (i) he has exceeded the limitation and (ii) he
wants distributed to him the amount of such excess deferrals (and income
thereon) notwithstanding the salary reduction agreement so that he will not
exceed the limitation. No later than the next April 15, the Committee may (but
shall not be obligated to) make the distribution requested, or deemed to have
been requested, by the Participant under this subparagraph. Such distribution
may be made notwithstanding any other provision of law or this Plan. Except as
otherwise provided by regulations issued by the Secretary of the Treasury, such
distribution shall not reduce the amount of Regular Pre-Tax Contributions
considered as Annual Additions under Section 4.6. Any amounts not distributed
under this subparagraph shall continue to be held in accordance with the terms
of this Plan.

                              (B)
After a distribution of excess Regular Pre-Tax Contributions (if any) under
subparagraph (A), Employer Matching Contributions made with respect to such
distributed Regular Pre-Tax Contributions (if any) shall be withdrawn (with
earnings thereon) from such Participant’s Employer Matching Sub-Account and
applied to reduce future Employer Matching Contributions under Section 3.2.

3.2 Employer Matching Contributions

          Subject
to Section 3.5, prior to the payroll period ending July 5, 2002, the Employer
shall make Employer Matching Contributions to the Trust Fund equal to 100% of
the Employee Pre-Tax Contributions made by each Participant with respect to
each payroll period, but taking into account only those Employee Pre-Tax
Contributions made by the Participant with respect to such payroll period which
are made at a rate that does not exceed 4% of the Participant’s Deferral
Compensation. 

          Subject
to Section 3.5, on or after the payroll period ending July 5, 2002, the
Employer shall make Employer Matching Contributions to the Trust Fund equal to
100% of the Regular Pre-Tax Contributions made by each Participant with respect
to each payroll period, but taking into account only those Regular Pre-Tax
Contributions made by the Participant with respect to such payroll period which
are made at a rate that does not exceed 6% of the Participant’s Deferral
Compensation. The Employer shall not make Employer Matching Contributions with

31

respect to Catch-Up Pre-Tax Contributions, except for
Catch-Up Pre-Tax Contributions that have been recharacterized as Regular
Pre-Tax Contributions pursuant to Section 3.1(b)(6). 

          Prior
to January 1, 2002, one-half of the Employer Matching Contributions made
prior to January 1, 2000 were invested in the Investment Option specification
designated by the Participant for the investment of the Participant’s Employee
Pre-tax Contributions and were held in the Employer Matching Sub-Account, and
the other one-half of the Employer Matching Contributions made prior to
January, 1, 2000 were mandatorily invested in Employer Stock and held in the
Employer Stock Matching Sub-Account. In addition, prior to January 1,
2000, the Employer made an additional Employer Matching Contribution equal to
15 percent of the Employer Stock Matching Contribution made pursuant to the
preceding sentence, and such additional amount also was mandatorily invested in
Employer Stock and held in the Employer Stock Matching Sub-Account. 

          Effective
January 1, 2002, a Participant may designate that his Employer Stock Matching
Sub-Account be invested in accordance with the Investment Option specification
designated by the Participant for the investment of Regular Pre-Tax
Contributions. Pursuant to Section 2.4(b), a Participant may change such
Investment Option specification. In the absence of a valid Investment Option
specification to the contrary, a Participant’s Employer Stock Matching
Sub-Account shall remain invested in the Employer Stock Fund.

          Effective
for Employer Matching Contributions made on or after January 1, 2000, the
entire Employer Matching Contribution shall be invested in accordance with the
Investment Option specification designated by the Participant for the
investment of Regular Pre-Tax Contributions and shall be held in the Employer
Matching Sub-Account.

          Notwithstanding
anything in this Section 3.2 to the contrary, if the Code Section 402(g) limit
is less than 6% of the Code Section 401(a)(17) limit when a Non-highly
Compensated Employee makes Regular Pre-tax Contributions equal to the Code
Section 402(g) limit and also makes Catch-up Pre-tax Contributions then the
Non-highly Compensated Employee will receive Employer Matching Contributions on
his Catch-up Pre-tax Contributions. Notwithstanding, the Non-highly Compensated
Employee will only receive Employer Matching Contributions on his Catch-up
Pre-tax Contributions to the extent necessary to meet the matching
contributions formula of this Section 3.2.

32

3.3 Discretionary Contributions

          The
Employer may elect for any Plan Year to make a Discretionary Contribution. The
Employer, in its sole discretion, shall determine the amount of such
Discretionary Contribution which shall be expressed as a percentage of Deferral
Compensation and which shall be allocated in accordance with Section 4.4. The
Employer shall also contribute sufficient Discretionary Contributions as may be
required by Section 11.1(b).

3.4 Rollover Contributions

          (a)
An Employee (regardless of whether he has satisfied the initial eligibility
requirements of Section 2.1) may, by making an Appropriate Request, request to
make a rollover contribution to the Plan from the type of plans described in
subsection (b) below.

          (b)
(1) The Plan will accept a direct rollover of an eligible rollover
distribution, as defined in Code Section 402(f)(2)(A), from:

                              (A)
a qualified plan described in Code Section 401(a) or 403(a), excluding
after-tax employee contributions;

                              (B)
an annuity contract described in Code Section 403(b), excluding after-tax
employee contributions; or

                              (C)
an eligible plan under Code section 457(b) which is maintained by a state,
political subdivision of a state, or any agency or instrumentality of a state
or political subdivision of a state.

                    (2)
The Plan will accept a participant contribution of an eligible rollover
distribution, as defined in Code Section 402(f)(2)(A), from:

                              (A)
a qualified plan described in Code Section 401(a) or 403(a); 

                              (B)
an annuity contract described in Code Section 403(b);

                              (C)
an eligible plan under Code section 457(b) which is maintained by a state,
political subdivision of a state, or any agency or instrumentality of a state
or political subdivision of a state.

                    (3)
The Plan will accept a participant rollover contribution of the portion of a
distribution from an individual retirement account or annuity described in Code
Section 408(a) or 408(b) that is a “conduit IRA” (i.e., an individual
retirement account or annuity that solely holds amounts that were rolled over
from a qualified retirement plan and earnings on such amounts).

33

          (c)
The Committee may require the Employee requesting to make a rollover
contribution to provide whatever documentation and/or certifications the
Committee deems necessary to reasonably conclude that the rollover contribution
satisfies the conditions set forth in subsection (b) above.

          (d)
Rollover contributions must be in cash; contributions in-kind shall not be
permitted. Such a contribution shall be held in the Employee’s Rollover
Sub-Account and shall be 100% vested at all times. The rollover contribution of
an Employee who has not satisfied the initial eligibility requirements of Section
2.1 shall be invested in the Fidelity Puritan Fund, unless and until he makes a
different Investment Option specification pursuant to Section 2.4. The rollover
contribution of an Employee who has already satisfied the initial eligibility
requirements of Section 2.1 shall be invested in accordance with the Employee’s
outstanding Investment Option specification.

          (e)
If the Committee, after reasonably concluding that a rollover contribution made
by an Employee met the conditions set forth in subsection (b) above, later
determines that the contribution did not meet those conditions, it shall direct
the Trustee to distribute to the Employee the amount of such rollover
contribution, plus any earnings attributable thereto, within a reasonable time
after such determination.

          (f)
A Katrina distribution that qualifies as an eligible rollover distribution
pursuant to IRS notice 2005-92 to a plan qualified under Code Section 401(a)
may be accepted as a rollover contribution to this Plan. The Employee making
such rollover shall have three (3) years from receipt of the Katrina
distribution to recontribute the distribution. During this three (3) year
period, the Employee can recontribute all or part of his distribution in a
single or multiple payments.

3.5 Maximum Deductible Contribution

          In
no event shall the Employer be obligated to make a Contribution for a Plan Year
in excess of the maximum amount deductible by it under Code Section 404(a)(3).

3.6 Actual Deferral Percentage Test Safe Harbor

          Effective
with the Plan Year commencing January 1, 1999, this Plan shall be deemed to
meet the requirements of Code Section 401(k)(3)(A)(ii) (the “actual deferral
percentage test”) since (1)(A) the rate of Employer Matching Contributions does
not increase as an Employee’s rate of Employee Pre-Tax Contributions increases,
(B) the aggregate amount of Employer 

34

Matching Contributions at each rate of Employee
Pre-Tax Contributions is at least equal to the aggregate amount of Employer
Matching Contributions which would be made if Employer Matching Contributions
were made on the basis of the percentages described in Code Section
401(k)(12)(B)(i), and (C) the rate of Employer Matching Contributions with
respect to any Employee Pre-Tax Contributions of a Highly Compensated Employee
at any rate of Employee Pre-Tax Contributions is not greater than that with
respect to an Employee who is not a Highly Compensated Employee, and (2) the
Committee provides each Eligible Employee, within a reasonable period before
each such Plan Year, written notice of the Eligible Employee’s rights and
obligations under the Plan which is sufficiently accurate and comprehensive to
appraise the Eligible Employee of such rights and obligations and is written in
a manner calculated to be understood by the average Eligible Employee.

3.7 Payment of Contributions to Trustee

          Unless
an earlier time for contribution is specified elsewhere in this Plan, in all
events the Employer shall pay to the Trustee its Contributions for each Plan
Year within the time prescribed by law, including extensions of time for the
filing of its federal income tax return for the Employer’s taxable year during
which such Plan Year ended.

3.8 Employee After-Tax Contributions

          Effective
January 1, 1996, no Participant shall be permitted to make employee after-tax
contributions under the Plan.

3.9 Actual Contribution Percentage Test Safe Harbor

          Effective
with the Plan Year commencing January 1, 1999, this Plan shall be deemed to meet
the requirements of Code Section 401(m)(2) (the “actual contribution percentage
test”) since (1)(A) the rate of Employer Matching Contributions does not
increase as an Employee’s rate of Employee Pre-Tax Contributions increases, (B)
the aggregate amount of Employer Matching Contributions at each rate of
Employee Pre-Tax Contributions is at least equal to the aggregate amount of
Employer Matching Contributions which would be made if Employer Matching
Contributions were made on the basis of the percentages described in Code
Section 401(k)(12)(B)(i), and (C) the rate of Employer Matching Contributions
with respect to any Employee Pre-Tax Contributions of a Highly Compensated
Employee at any rate of Employee Pre-Tax Contributions is not greater than that
with respect to an Employee who is not a Highly Compensated Employee, (2) the
Committee provides each Eligible Employee, within a 

35

reasonable period before each such Plan Year, written
notice of the Eligible Employee’s rights and obligations under the Plan which
is sufficiently accurate and comprehensive to appraise the Eligible Employee of
such rights and obligations and is written in a manner calculated to be
understood by the average Eligible Employee, and (3) Employer Matching
Contributions on behalf of any Employee may not be made with respect to an
Employee’s Employee Pre-Tax Contributions in excess of 6 percent of the
Employee’s Deferral Compensation.

3.10 Merger of Quest
Diagnostics Incorporated Employee Stock Ownership Plan into this Plan

          Effective
October 1, 2002, the Quest Diagnostics Incorporated Employee Stock Ownership
Plan (the “ESOP”) merged into this Plan, and the assets and liabilities of the
ESOP were subsequently transferred to the Trust Fund. The balance of each former
ESOP participant’s account under the ESOP immediately prior to the merger was
transferred to this Plan. The value of each former ESOP participant’s “Initial
Contribution Sub-Account” under the ESOP immediately prior to the merger shall
represent the opening balance of such Participant’s Prior ESOP Employer Stock
Sub-Account under this Plan, and the value of each former ESOP participant’s
“Discretionary Contribution Sub-Account” under the ESOP immediately prior to
the merger shall represent the opening balance of such Participant’s Prior ESOP
Employer Contributions Sub-Account under this Plan. Such values were determined
on the basis of the closing share price of Employer Stock on October 1, 2002,
as published in The Wall Street Journal, and by converting shares of Employer
Stock to equivalent units.

          A
Participant’s Prior ESOP Employer Stock Sub-Account and Prior ESOP Employer
Contributions Sub-Account shall be initially invested in the Employer Stock
Fund.

          As
soon as administratively practicable after the merger, a Participant may
designate that his Prior ESOP Employer Stock Sub-Account and his Prior ESOP
Employer Contributions Sub-Account be invested in accordance with the
Investment Option specification designated by the Participant for the investment
of Regular Pre-Tax Contributions. Pursuant to Section 2.4(b), a Participant may
change such Investment Option specification. In the absence of a valid
Investment Option specification to the contrary, a Participant’s Prior ESOP
Employer Stock Sub-Account and Prior ESOP Employer Contributions Sub-Account
shall remain invested in the Employer Stock Fund.

36

3.11 USERRA

          Notwithstanding
any provision of this Plan to the contrary, Contributions with respect to
qualified military service will be provided in accordance with Code
Section 414(u).

3.12 QNEC’s

          To
the extent it deems necessary to correct a failure to follow the provisions of
the Plan, the Employer may make “qualified nonelective contributions” (as
defined in §1.401(k)-1(g)(13) of the Treasury regulations) on behalf of
affected individuals in an amount determined by the Employer. Such qualified
nonelective contributions shall be held in a Participant’s Qualified
Nonelective Contribution Sub-Account and shall be 100% vested at all times.

37

ARTICLE
IV
ALLOCATIONS
TO INDIVIDUAL ACCOUNTS

4.1 Individual Accounts

          
(a) The Committee shall
establish and maintain an Individual Account in the name of each Participant,
comprised of the following sub-accounts to which the Committee shall credit all
amounts allocated to each such Participant under this Article IV: an Employee
Regular Pre-Tax Sub-Account, an Employee Pre-Tax Catch-Up Sub-Account, an
Employee After-Tax Sub-Account, an Employer Matching Sub-Account, an Employer
Stock Matching Sub-Account, a Partnership Sub-Account, a Rollover Sub-Account,
a Prior Plan Rollover Sub-Account, a Pre-1999 Cash Match Sub-Account, a
Post-1999 Cash Match Sub-Account, a Pre-1999 Stock Match Sub-Account, a
Post-1999 Stock Match Sub-Account, an ESOP Diversification Sub-Account, a Prior
ESOP Employer Contributions Sub-Account, a Prior ESOP Employer Stock
Sub-Account, a Money Purchase Pension Plan Sub-Account, a Prior Plan Employer
Contribution Sub-Account, a Prior Plan Employer Qualified Sub-Account, a CBCLS Employer
Contribution Sub-Account, a Prior Employer Match Sub-Account, a Prior Profit
Sharing Sub-Account, a Prior Unilab Employer Contribution Sub-Account, a
Qualified Nonelective Contribution Sub-Account, a Prior LabOne Employer Match
Sub-Account, a Prior LabOne Money Purchase Plan Sub-Account, a Vested Employer
Stock Dividend Sub-Account and a Vested Money Purchase Plan Dividend
Sub-Account.

          (b)
Separate accounts shall be maintained for all former Employee Participants who
have an interest in the Plan.

          (c)
The maintenance of separate accounts shall not require a segregation of the
Trust assets and no Participant shall acquire any right to or interest in any
specific asset of the Trust as a result of the allocations provided for in the
Plan.

4.2 Allocation of Employee Pre-Tax Contributions

          A
Participant’s Regular Pre-Tax Contributions under Section 3.1(a) shall be
allocated to the Participant’s Employee Regular Pre-Tax Sub-Account and shall
be invested in accordance with the Participant’s outstanding Investment Option
specification. A Participant’s Catch-Up Pre-Tax Contributions under Section
3.1(b) shall be allocated to the Participant’s Employee

38

Pre-Tax Catch-Up Sub-Account and shall be invested in
accordance with the Investment Option specification designated by the
Participant for the investment of Regular Pre-Tax Contributions.

4.3 Allocation of Employer Matching Contributions

          As
of the end of each payroll period, the Employer Matching Contributions made on
behalf of a Participant under Section 3.2 shall be allocated to his Employer
Matching Sub-Account and shall be invested in accordance with the Investment
Option specification designated by the Participant for the investment of
Regular Pre-Tax Contributions. Notwithstanding the preceding sentence, Employer
Matching Contributions with respect to recharacterized Regular Pre-Tax
Contributions shall be made as soon as administratively practicable following
the end of the Plan Year for which the Regular Pre-Tax Contributions were
originally designated as Catch-Up Pre-Tax Contributions. 

4.4 Allocation of Discretionary Contributions

          (a)
A Participant’s allocable share as determined under subsection (b) of the
Discretionary Contribution shall be credited to the Participant’s Partnership
Sub-Account as of the last day of the Plan Year for which his Employer shall
make a Discretionary Contribution under Section 3.3 and shall be invested in
accordance with the Investment Option specification designated by the Participant
for the investment of Regular Pre-Tax Contributions.

          (b)
Each Participant who is an Active Participant with respect to a Plan Year for
which his Employer shall make a Discretionary Contribution shall receive an
allocation of the Discretionary Contribution. Each Participant shall receive an
amount equal to the Discretionary Contribution (expressed as a percentage of
Deferral Compensation) multiplied by the Participant’s Deferral Compensation
during the Plan Year.

4.5 Allocation of Forfeitures

          Any
Forfeitures arising under Section 5.5(b)(3) shall be used to the extent
necessary to restore a reemployed Participant’s Prior ESOP Employer Stock
Sub-Account, Prior ESOP Employer Contributions Sub-Account, Prior Employer
Match Sub-Account or Prior Unilab Employer Contribution Sub-Account as provided
in Section 5.5(b)(3) and/or shall be applied to reduce Employer Contributions
(including corrective allocations made to the Plan and earnings on such
corrective allocations).

39

4.6 Maximum Additions

          (a)
Notwithstanding anything herein to the contrary, the sum of the Regular Pre-Tax
Contributions, Employer Matching Contributions and Discretionary Contributions
allocated to a Participant’s Individual Account for any Limitation Year (the
“Annual Additions”), when combined with any annual additions credited to the
Participant for the same period under any other qualified defined contribution
plan maintained by the Employer or an Affiliate, shall not exceed the lesser of
the following:

                    (1)
$45,000, as adjusted for increases in the cost-of-living under Code Section
415(d); or

                    (2)
100% of the Participant’s total Section 415 Compensation received from the
Employer for such Limitation Year.

          (b)
In the event a Participant is covered by this Plan and any other qualified
defined contribution plan maintained by the Employer (or an Affiliate), the
maximum Annual Additions to this Plan shall be decreased as determined
necessary by the Employer to insure that the limitations of Code Section 415(c)
are not exceeded.

          In
the event that corrective adjustments in the Annual Additions to any Individual
Accounts are required as a result of Forfeitures or due to a reasonable error
in estimating a Participant’s compensation or in determining the amount of
Regular Pre-Tax Contributions that may be made with respect to any Participant
under the annual additions limit of Section 4.6(a), the adjustment shall first
be made by reducing the Regular Pre-Tax Contributions, next the Discretionary
Contributions, and finally the Employer Matching Contributions.

          Any
amounts withheld or taken from a Participant’s Individual Account pursuant to
the preceding paragraph shall be segregated in the Trust Fund in a separate
account and applied toward the Contribution of the Employer for the next
Limitation Year, except that Regular Pre-Tax Contributions (and earnings
thereon) shall be distributed to the Participant who made them.

40

ARTICLE
V
DISTRIBUTIONS

5.1 Normal Retirement

          Upon
the retirement of a Participant on or after attaining his Normal Retirement
Age, the value of his entire Individual Account (as determined under Section
5.10) automatically shall become 100% vested and shall become payable as soon
as administratively feasible following his retirement. The Committee shall
thereupon direct the Trustee to distribute to the retiring Participant such
amount in accordance with Section 5.6.

5.2 Disability

          Upon
the Total and Permanent Disability of a Participant, the value of his entire
Individual Account (as determined under Section 5.10) automatically shall
become 100% vested. As soon as administratively feasible following a
Participant’s Total and Permanent Disability, the Committee shall direct the
Trustee to distribute to the Participant such amount in accordance with Section
5.6. Notwithstanding the preceding sentence, pursuant to Section 5.7(b),
consent of the Participant may be required before distribution can be made.

5.3 Death Before Retirement or Termination of
Employment

          (a)
Upon the death of a Participant before retirement or termination of employment,
the value of such Participant’s entire Individual Account (as determined under
Section 5.10) automatically shall become 100% vested and shall become payable
in accordance with subsection (b). The Committee shall direct the Trustee to
distribute to the deceased Participant’s Beneficiary such amount in accordance
with Section 5.6. After the death of the Participant and before distribution of
the Participant’s Individual Account balance, the Participant’s Beneficiary
shall be entitled to select the Investment Options in which the Individual
Account will be invested in accordance with the same rules then applicable to
Participant selection of Investment Options.

          (b)
(1) If a Participant other than a CPF Pension Plan Participant or LabOne
Pension Plan Participant dies, the Beneficiary shall receive the Individual
Account in a lump sum or installments under Section 5.6(c) as soon as
administratively feasible unless the Beneficiary defers the distribution
subject o Section 5.9(c).

41

          (b)
(2) If a CPF Pension Plan Participant or a LabOne Pension Plan Participant dies
with his surviving spouse as Beneficiary, the Individual Account shall be paid
by purchase of an annuity contract providing for annuity payments for the
spouse’s lifetime, unless the spouse elects to receive the Individual Account
in a lump sum or in installments under Section 5.6(c). Subject to Section
5.9(c), payments shall commence at a time designated by the spouse, but in no
event earlier than a date that falls as soon as administratively feasible
following the Participant’s date of death. 

5.4 Death After Retirement or Termination of
Employment

          (a)
Upon the death of a Participant who has terminated employment but who has not
received (or begun receiving) his benefit under Section 5.6, the value of the
vested portion of such Participant’s Individual Account (as determined under
Section 5.5(b)(2) and Section 5.10) shall become payable in accordance with
subsection (b). (For any Participant who has begun benefit payments under
Section 5.6, the provisions of such form of distribution shall control any
payments upon the death of such Participant.) The Committee shall direct the
Trustee to distribute to the deceased Participant’s Beneficiary such amount in
accordance with Section 5.6. After the death of the Participant and before
distribution of the Participant’s Individual Account balance, the Participant’s
Beneficiary shall be entitled to select the Investment Options in which the
Individual Account will be invested in accordance with the same rules then
applicable to Participant selection of Investment Options.

          (b)
(1) If a Participant other than a CPF Pension Plan Participant or LabOne
Pension Plan Participant dies, the Beneficiary shall receive the Individual
Account in a lump sum or installments under Section 5.6(c) as soon as
administratively feasible unless the Beneficiary defers the distribution
subject o Section 5.9(c).

          (b)
(2) If a CPF Pension Plan Participant or a LabOne Pension Plan Participant dies
with his surviving spouse as Beneficiary, the Individual Account shall be paid
by purchase of an annuity contract providing for annuity payments for the
spouse’s lifetime, unless the spouse elects to receive the Individual Account
in a lump sum or in installments under Section 5.6(c). Subject to Section
5.9(c), payments under an annuity contract shall commence at a time designated
by the spouse, but in no event earlier than a date that falls as soon as
administratively feasible following the Participant’s date of death.

42

5.5 Termination of Employment

          (a)
Upon the termination of employment of a Participant due to a
reduction-in-force, the value of his entire Individual Account (as determined
under Section 5.10) automatically shall become 100% vested. As soon as
administratively feasible following a Participant’s termination of employment
due to a reduction-in-force, the Committee shall direct the Trustee to
distribute to the Participant such amount in accordance with Section 5.6.
Notwithstanding the preceding sentence, pursuant to Section 5.7(b), consent of
the Participant may be required before distribution can be made.

          (b)
(1) Upon termination of employment for any reason other than retirement under
Section 5.1, disability under Section 5.2, death under Section 5.3, or
reduction-in-force under subsection (a) above, a Participant shall be entitled
to the value of the vested portion of his Individual Account (as determined
under paragraph (b)(2) below and Section 5.10). 

          As
soon as administratively feasible following a Participant’s termination of
employment, the Committee shall direct the Trustee to distribute to such
Participant the value of the vested portion of his Individual Account.
Notwithstanding the preceding sentence, pursuant to Section 5.7(b), consent of
the Participant may be required before distribution can be made.

                    (2)
(A) A Participant shall at all times be 100% vested in each portion of his
Individual Account other than his Prior ESOP Employer Stock Sub-Account, his
Prior ESOP Employer Contributions Sub-Account, his Prior Employer Match
Sub-Account, his Prior Unilab Employer Contribution Sub-Account, his Prior
LabOne Money Purchase Sub-Account, and his Prior LabOne Employer Match
Sub-Account (i.e., his Employee Regular Pre-Tax Sub-Account, Employee Pre-Tax
Catch-Up Sub-Account, Employee After-Tax Sub-Account, Employer Matching
Sub-Account, Employer Stock Matching Sub-Account, Partnership Sub-Account,
Rollover Sub-Account, ESOP Diversification Sub-Account, Money Purchase Pension
Plan Sub-Account, Prior Plan Employer Contribution Sub-Account, Prior Plan
Employer Qualified Sub-Account, CBCLS Employer Contribution Sub-Account, Prior
Profit Sharing Sub-Account and Qualified Nonelective Contribution Sub-Account).

43

                              (B)
A Participant shall have a vested interest in the following percentage of his
Prior ESOP Employer Stock Sub-Account, taking into account only Years of
Vesting Service credited for periods of employment on or after December 31,
1996:

	
 

	
 

	
 

	
Years of Vesting
Service 

	
Vested Interest 

	
 

	

	

	

	
Less than 2

	
0

	
%

	
2 or more

	
100

	
%

Notwithstanding the preceding, (i) a Participant who
was an active Employee or who was on an authorized leave of absence as of
August 16, 1999 automatically shall be 100% vested in his Prior ESOP Employer
Stock Sub-Account; and (ii) a Participant who terminated employment prior to
August 16, 1999 with fewer than two Years of Vesting Service (taking into
account only Years of Vesting Service credited for periods of employment on or
after December 31, 1996), and who subsequently returns as an Employee after August
16, 1999 prior to incurring a five-year Period of Severance beginning
immediately after the date his employment terminated, automatically shall
become 100% vested in his Prior ESOP Employer Stock Sub-Account as of the date
of his reemployment.

                              (C)
A Participant shall have a vested interest in the following percentage of his
Prior ESOP Employer Contributions Sub-Account, taking into account all Years of
Vesting Service:

	
 

	
 

	
Years of Vesting
Service 

	
Vested Interest 

	

	

	
Less than 3

	
    0%

	
3 or more

	
100%

                              (D)
An AML-East Plan Participant or an AML-West Plan Participant shall have a
vested interest in the following percentage of his Prior Employer Match
Sub-Account:

	
 

	
 

	
Years of Vesting
Service 

	
Vested Interest 

	

	

	
0

	
    0%

	
1

	
  25%

	
2

	
  50%

	
3

	
100%

44

                              (E)
A Unilab Plan Participant shall have a vested interest in the following
percentage of his Prior Unilab Employer Contribution Sub-Account:

	
 

	
 

	
Years of Vesting
Service 

	
Vested Interest 

	

	

	
0

	
    0%

	
1

	
  10%

	
2

	
  20%

	
3

	
  50%

	
4

	
100%

                              (F)
A LabOne (k) Plan Participant shall have a vested interest in the following
percentage of his Prior LabOne Employer Match Sub Account:

	
 

	
 

	
Years of Vesting
Service 

	
Vested Interest 

	

	

	
Less than 3

	
    0%

	
3 or more

	
100%

                              (G)
A LabOne Pension Plan Participant shall have a vested interest in the following
percentage of his Prior LabOne Money Purchase Plan Sub-Account:

	
 

	
 

	
Years of Vesting
Service 

	
Vested Interest 

	

	

	
Less than 5

	
    0%

	
5 or more

	
100%

                              (H)
Notwithstanding the preceding provisions of this Section 5.5(b)(2), a Participant
shall be 100% vested in his entire Individual Account upon termination of
employment after the attainment of his Normal Retirement Age.

                    (3)
(A) If a Participant’s employment terminates for any reason other than
retirement under Section 5.1, disability under Section 5.2, death under Section
5.3 or reduction-in-force under Section 5.5(a) at a time when he has no vested
interest in his Prior ESOP Employer Stock Sub-Account and/or his Prior ESOP
Employer Contributions Sub-Account, the Committee nonetheless shall treat the
Participant as if he had received a distribution of his Prior ESOP Employer
Stock Sub-Account and/or his Prior ESOP Employer Contributions Sub-Account on
the date his employment terminated and shall forfeit the Participant’s entire
Prior ESOP Employer Stock Sub-Account and/or his entire Prior ESOP Employer
Contributions Sub-Account as soon as administratively feasible after the date
his 

45

employment terminated. If the former Participant
returns as an Employee prior to incurring a five-year Period of Severance
beginning immediately after the date his employment terminated, his Prior ESOP
Employer Stock Sub-Account and/or his Prior ESOP Employer Contributions
Sub-Account, determined as of the date of forfeiture, shall be fully restored
to him as soon as administratively feasible after his reemployment. In such
case, the Participant’s Individual Account shall be restored first out of
Forfeitures for such Plan Year and, if such Forfeitures are insufficient to
restore such Individual Account, the Employer shall make a special contribution
to the extent necessary so that the Participant’s Individual Account is fully
restored.

                              (B)
If the employment of an AML-East Plan Participant or an AML-West Plan
Participant terminates for any reason other than retirement under Section 5.1,
disability under Section 5.2, death under Section 5.3 or reduction-in-force
under Section 5.5(a) at a time when he is not fully vested in his Prior
Employer Match Sub-Account, then the Committee shall follow the procedure set
forth in clause (i) or that set forth in clause (ii) below, as appropriate:

                                        (i)
If the Participant had no vested interest in his Prior Employer Match
Sub-Account at the time of his termination of employment, the Committee
nonetheless shall treat the Participant as if he had received a distribution on
the date his employment terminated and shall forfeit the Participant’s entire
Prior Employer Match Sub-Account as soon as administratively feasible after the
date his employment terminated. If such a Participant returns as an Employee
prior to incurring a five-year Period of Severance, his Prior Employer Match
Sub-Account, determined as of the date of his deemed distribution, shall be
fully restored to him as soon as administratively feasible after his
reemployment.

                                                  If
the Participant had a 25% or 50% vested interest in his Prior Employer Match
Sub-Account at the time of his termination of employment and if he receives a
distribution of such vested interest before he incurs a five-year Period of
Severance, the remaining portion of his Prior Employer Match Sub-Account shall
be forfeited as soon as administratively feasible after the date of
distribution. If such a Participant returns as an Employee prior to incurring a
five-year Period of Severance and if he repays the full amount of the distribution
paid to him by reason of his termination of employment no later than the fifth
anniversary of the date of his reemployment, then his Prior Employer Match
Sub-Account,

46

determined as of the date of the distribution of his
vested interest, shall be fully restored to him as soon as administratively
feasible after such repayment is made.

                                        A
Participant’s Prior Employer Match Sub-Account shall be restored first out of
Forfeitures for such Plan Year and, if such Forfeitures are insufficient to
restore such Prior Employer Match Sub-Account, the Employer shall make a
special contribution to the extent necessary so that the Participant’s Prior
Employer Match Sub-Account is fully restored.

                              (ii)
If the Participant had a 25% or 50% vested interest in his Prior Employer Match
Sub-Account at the time of his termination of employment and if he does not
receive a distribution of such vested interest before he incurs a five-year
Period of Severance, the remaining portion of his Prior Employer Match
Sub-Account shall be forfeited as soon as administratively feasible after such
five-year Period of Severance has been incurred.

                    (C)
If the employment of a Unilab Plan Participant terminates for any reason other
than retirement under Section 5.1, disability under Section 5.2, death under
Section 5.3 or reduction-in-force under Section 5.5(a) at a time when he
is not fully vested in his Prior Unilab Employer Contribution Sub-Account, then
the Committee shall follow the procedure set forth in clause (i) or that set
forth in clause (ii) below, as appropriate:

                              (i)
If the Participant had no vested interest in his Prior Unilab Employer
Contribution Sub-Account at the time of his termination of employment, the
Committee nonetheless shall treat the Participant as if he had received a
distribution on the date his employment terminated and shall forfeit the
Participant’s entire Prior Unilab Employer Contribution Sub-Account as soon as
administratively feasible after the date his employment terminated. If such a
Participant returns as an Employee prior to incurring a five-year Period of
Severance, his Prior Unilab Employer Contribution Sub-Account, determined as of
the date of his deemed distribution, shall be fully restored to him as soon as
administratively feasible after his reemployment.

                                        If
the Participant is partially vested in his Prior Unilab Employer Contribution
Sub-Account at the time of his termination of employment and if he receives a
distribution of his vested interest before he incurs a five-year Period of
Severance, the remaining portion of his Prior Unilab Employer Contribution
Sub-Account shall be forfeited as soon as administratively feasible after the
date of distribution. If such a Participant returns as an 

47

Employee prior to incurring a five-year Period of
Severance and if he repays the full amount of the distribution paid to him by
reason of his termination of employment no later than the fifth anniversary of
the date of his reemployment, then his Prior Unilab Employer Contribution
Sub-Account, determined as of the date of the distribution of his vested
interest, shall be fully restored to him as soon as administratively feasible
after such repayment is made.

                                        A
Participant’s Prior Unilab Employer Contribution Sub-Account shall be restored
first out of Forfeitures for such Plan Year and, if such Forfeitures are
insufficient to restore such Prior Unilab Employer Contribution Sub-Account,
the Employer shall make a special contribution to the extent necessary so that
the Participant’s Prior Unilab Employer Contribution Sub-Account is fully
restored.

                              (ii)
If the Participant is partially vested interest in his Prior Unilab Employer
Contribution Sub-Account at the time of his termination of employment and if he
does not receive a distribution of such vested interest before he incurs a
five-year Period of Severance, the remaining portion of his Prior Unilab
Employer Contribution Sub-Account shall be forfeited as soon as
administratively feasible after such five-year Period of Severance has been
incurred.

          (c)
In the event a Participant who terminated his employment with an Employer is
reemployed as an Employee prior to receiving a distribution of his Individual
Account, he shall not be entitled to a distribution as provided in this Section
5.5 due to such termination, but shall be entitled to a distribution as
determined herein upon any subsequent termination of employment for any reason.

5.6 Method of Payment

          (a)
Normal Form

                    The
normal form of distribution under the Plan is a lump sum and the remainder of
this Section shall not be applicable to a Participant whose normal form is a
lump sum. All Participants are subject to this paragraph except such
Participants as described in the next paragraph who have a portion of their
Individual Account attributable to a money purchase pension plan which was
merged with this Plan. Lump sum payments from investments held in the Employer
Stock Fund may be distributed in cash or in Employer Stock, at the election of
the Participant. In the absence of a valid election on the part of the
Participant, payments from 

48

investments held in the Employer Stock Fund shall be
distributed in cash. Lump sum payments from other investments shall be made
only in cash.

                    Notwithstanding
the above, for a CPF Pension Plan Participant and a LabOne Pension Plan
Participant, the automatic form for a married Participant is a qualified joint
and survivor annuity with one-half of the Participant’s lifetime amount payable
after his death to his surviving spouse. The automatic form for an unmarried
Participant is a single life annuity. A CPF Pension Plan Participant and a
LabOne Pension Plan Participant shall be subject to (b), (c), (d) and (e) of
this Section.

          (b)
Election Procedures

                    (1)
No less than seven and no more than 90 days (180 days after December 31,
2007) before distribution of a Participant’s benefit commences, each
Participant and his spouse (if any) shall be given a written notice to the
effect that if the Participant is married on the date of commencement of
payments, benefits will be payable in the form of a “qualified joint and
survivor annuity” under subsection (d) unless the Participant, with the consent
of his spouse, elects to the contrary prior to the commencement of payments.
Consent of the spouse is not required for an election under (c)(3) unless the
Beneficiary is not the spouse. The notice shall describe, in a manner intended
to be understood by the Participant and his spouse, the terms and conditions of
the qualified joint and survivor annuity, the financial effect of the election
of an optional form or absence of election, the rights of the Participant to
elect an optional form or to revoke such an election, and the rights of the
Participant’s spouse to consent to an election of an optional form. In
addition, the notice shall inform the Participant that he has 30 days to elect
whether to have benefits paid in an optional form.

                    (2)
During the 90-day period (180-day period after December 31, 2007) ending on the
day his distribution commences, each Participant may elect to have his benefit
hereunder paid under the normal form or any one of the options set forth in
subsection (c) in lieu of the automatic form provided for in subsection (a).

                    (3)
A Participant who desires to have his benefit hereunder paid under one of the
optional methods provided in subsection (c) shall make such an election by
making an Appropriate Request. An election by a Participant to receive his
retirement benefit under any of the optional methods of payment as provided in
subsection (c) may be revoked by such Participant at any time and any number of
times during the 90-day period (180-day period after 

49

December 31, 2007) ending on the day his benefit
payments commence. After retirement benefit payments have commenced, no
elections or revocations of an optional method will be permitted under any
circumstances.

          (c)
Available Options

                    (1)
Monthly, quarterly or annual installments from the Trust Fund over a period not
to exceed the lesser of (A) 10 years, or (B) the life expectancy of the
Participant or the joint life expectancies of the Participant and his
Beneficiary, in either case determined at the time payments commence. Life
expectancies shall be determined when payments commence and shall not
thereafter be recalculated. Installment payments shall be made pro-rata from
the various Sub-Accounts within the Participant’s Individual Account.

                    (2)
An annuity contract, purchased from an insurance company (or similar source) by
the Committee utilizing the value of the vested portion of the Participant’s
Individual Account, which provides for equal monthly payments over the
Participant’s lifetime and which contains such other terms and provisions as
may be approved in writing by such Participant.

                    (3)
An annuity contract, purchased from an insurance company (or similar source) by
the Committee utilizing the value of the vested portion of the Participant’s
Individual Account, which provides for equal monthly payments over the
Participant’s lifetime and for such monthly payments (or one-half thereof or
after December 31, 2007, three-quarters thereof) to be continued after his
death to the Participant’s designated Beneficiary over the lifetime of the
Beneficiary. If the designated Beneficiary is not living at the death of the
Participant, no additional benefit shall be payable hereunder. Such annuity
contract shall contain such other terms and provisions as may be approved in
writing by the electing Participant. 

                    (4)
An annuity contract, purchased from an insurance company (or similar source) by
the Committee utilizing the value of the vested portion of the Participant’s
Individual Account, which provides for equal monthly payments over the
Participant’s lifetime and in the event of his death before 120 monthly
payments have fallen due, such payments shall be continued to the Participant’s
designated Beneficiary until the remainder of the 120 monthly payments have
been paid. Such annuity contract shall contain such other terms and provisions
as may be approved in writing by the electing Participant. (This optional
method shall not be available to a Beneficiary.)

          (d)
Qualified Joint and Survivor Annuity

50

                    If
a Participant is married on the date distribution of his Individual Account
commences, a joint and survivor annuity with one-half of the Participant’s
lifetime amount payable after his death to his surviving spouse (to whom he was
married on the date payments to the Participant first commenced) as his
Beneficiary must be elected or another joint and survivor annuity described in
(c)(3) must be elected in lieu thereof or the Participant’s spouse must consent
in writing to any other form elected. Such consent shall acknowledge its effect
and be witnessed by a Committee member (or an authorized representative) or a
notary public. Spousal consent is not required if there is no spouse, the
spouse cannot be located or under such other circumstances as may be prescribed
by regulations. Any spousal consent shall only be applicable to the spouse
granting such consent.

5.7 Cash-Outs; Consent

          (a)
(1) Effective for distributions payable on or after March 28, 2005, if a
Participant retires under Section 5.1, becomes disabled under Section 5.2
or terminates employment under Section 5.5 and the value of the vested portion
of his Individual Account (as determined under Section 5.10) does not exceed
$1,000 as of the first date thereafter upon which such Individual Account is
valued for purposes of determining if it exceeds $1,000, the Committee shall
direct the Trustee to distribute to the Participant such amount in accordance
with Section 5.6(a) as soon as administratively feasible following such
valuation date. If the value of the vested portion of such a Participant’s
Individual Account exceeds $1,000 upon such valuation date, but is $1,000 or
less as of any subsequent date upon which such Individual Account is valued for
purposes of determining if it exceeds $1,000, the Committee shall direct the
Trustee to distribute to the Participant such amount in accordance with Section
5.6(a) as soon as administratively feasible following such valuation date. 

                    (2)
If a Participant dies under Sections 5.3 or 5.4 and the value of the vested
portion of his Individual Account (as determined under Section 5.10) does not
exceed $5,000 as of the first date thereafter upon which such Individual
Account is valued for purposes of determining if it exceeds $5,000, the
Committee shall direct the Trustee to distribute to the Participant’s
Beneficiary such amount in accordance with Section 5.6(a) as soon as
administratively feasible following such valuation date. If the value of the
vested portion of such a Participant’s Individual Account exceeds $5,000 upon
such valuation date, but is $5,000 or less as of any subsequent date upon which
such Individual Account is valued for purposes of 

51

determining if it exceeds $5,000, the Committee shall
direct the Trustee to distribute to the Participant’s Beneficiary such amount
in accordance with Section 5.6(a) as soon as administratively feasible
following such valuation date.

          (b)
If a Participant becomes disabled under Section 5.2 or terminates employment
under Section 5.5 and the value of the vested portion of his Individual Account
(as determined under Section 5.10) exceeds $1,000 (and such value exceeds
$1,000 as of each subsequent date upon which such Individual Account is valued
for purposes of determining if it exceeds $1,000), then no distribution shall
be made prior to the Participant’s “required beginning date” under Section
5.9(f)(5) unless he consents to the making of such distribution through an
Appropriate Request. Distribution shall commence no later than 90 days from the
date the consent of the Participant is obtained. The Participant shall be given
a notice of the right to defer any distribution until his “required beginning
date” under Section 5.9(f)(5). Such notification shall be addressed no less
than 30 days and no more than 90 days prior to the date distribution commences.
Notwithstanding the preceding sentence, distribution may commence less than 30
days after the notification was addressed, as long as the notification informs
the Participant that he has a right to a period of at least 30 days after
receiving the notice to consider the decision of whether or not to elect a
distribution.

5.8 Benefits to Minors and Incompetents

          (a)
In case any person entitled to receive payment under the Plan shall be a minor,
the Committee, in its discretion, may distribute such payment in any one or
more of the following ways:

                    (1)
By payment thereof directly to such minor;

                    (2)
By application thereof for the benefit of such minor;

                    (3)
By payment thereof to either parent of such minor or to any person who shall be legally qualified and shall be acting as
guardian of the person or the property of such minor, provided the parent or
adult person to whom any amount shall be paid shall have advised the Committee
in writing that he will hold or use such amount for the benefit of such minor.

          (b)
In the event a person entitled to receive payment under the Plan is physically
or mentally incapable of personally receiving and giving a valid receipt for
any payment due (unless prior claim therefor shall have been made by a duly
qualified legal representative of such person), such payment in the discretion
of the Committee may be made to the spouse, son, 

52

daughter, parent, brother or sister of the recipient
or to any other person who is responsible for the welfare of such recipient.

          (c)
Any payments made under subsections (a) or (b) shall, to the extent of the
payments, fully discharge the obligations of the Committee and the Plan to any
other person making a claim hereunder with respect to such payments.

5.9 Payment of Benefits

          (a)
Except as provided in subsection (b), in the event a Participant’s Individual
Account shall be due and payable under this Article V and the Participant has
not elected otherwise in accordance with the Plan, any payment of benefits to
the Participant shall begin not later than 60 days after the close of the Plan
Year in which occurs the latest of:

                    (1)
the date on which the Participant attains age 65; 

                    (2)
the 10th anniversary of the date in which the Participant commenced
participation in the Plan; and

                    (3)
termination of employment of the Participant with the Employer.

          (b)
The requirements of subsections (b) – (e)
of this Section 5.9 will apply for purposes of determining required minimum
distributions for calendar years beginning with the 2003 calendar year. The requirements
of subsections (b) – (e) will take precedence over any inconsistent provisions
of the Plan. All distributions required under subsections (b) – (e) will be
determined and made in accordance with the Treasury regulations under Code
Section 401(a)(9).

          (c) (1) The Participant’s entire interest will be
distributed, or begin to be distributed, to the Participant no later than the
Participant’s “required beginning date.”

                    (2) If
the Participant dies before distributions
begin, the Participant’s entire interest will be distributed, or begin to be
distributed, no later than as follows:

                              (A)
If the Participant’s surviving spouse is the Participant’s sole “designated
beneficiary,” then, except as provided in paragraph (4) below, distributions to
the surviving spouse will begin by December 31 of the calendar year immediately
following the calendar year in which the Participant died, or by
December 31 of the calendar year in which the Participant would have
attained age 701⁄2, if later.

                              (B)
If the Participant’s surviving spouse is not
the Participant’s sole “designated beneficiary,” then, except as provided in
paragraph (4) below, distributions to the 

53

“designated beneficiary” will
begin by December 31 of the calendar year immediately following the calendar
year in which the Participant died.

                              (C)
If there is no “designated beneficiary” as of
September 30 of the year following the year of the Participant’s death, the
Participant’s entire interest will be distributed by December 31 of the
calendar year containing the fifth anniversary of the Participant’s death.

                              (D)
If the Participant’s surviving spouse is the
Participant’s sole “designated beneficiary” and the surviving spouse dies after
the Participant but before distributions to the surviving spouse begin, this
paragraph (2), other than subparagraph (A), will apply as if the surviving
spouse were the Participant.

                    For
purposes of this paragraph (2) and subsection
(e), distributions are considered to begin on the Participant’s “required
beginning date” (or, if subparagraph (D) applies, the date distributions are
required to begin to the surviving spouse under subparagraph (A)). If
distributions under an annuity purchased from any insurance company irrevocably
commence to the Participant before the Participant’s “required beginning date”
(or to the surviving spouse before the date distributions are required to begin
to the surviving spouse under subparagraph (A)), the date distributions are
considered to begin is the date distributions actually commence.

                    (3)
Unless the Participant’s interest is
distributed in the form of an annuity purchased from an insurance company or in
a single sum on or before the “required beginning date,” as of the first
“distribution calendar year” distributions will be made in accordance with
subsections (d) and (e) of this Section 5.9. If the Participant’s interest is
distributed in the form of an annuity purchased from an insurance company,
distributions thereunder will be made in accordance with the requirements of
Code Section 401(a)(9) and the Treasury regulations. 

                    (4)
Notwithstanding paragraph (2), if a Participant dies before distributions begin
and there is a “designated beneficiary,” distribution to the “designated
beneficiary” is not required to begin by the date specified in paragraph (2),
but the Participant’s entire interest will be distributed to the designated
beneficiary by December 31 of the calendar year containing the fifth
anniversary of the Participant’s death. If the Participant’s surviving spouse
is the Participant’s sole “designated beneficiary” and the surviving spouse
dies after the Participant but before distributions to either the Participant
or the surviving spouse begin, this paragraph (4) will 

54

apply as if the surviving spouse were the Participant. This paragraph
shall apply to distributions in the form of a lump sum.

          (d) (1)
During the Participant’s lifetime, the minimum amount that will be distributed
for each “distribution calendar year” is the lesser of:

                              (A)
the quotient obtained by dividing the “Participant’s account balance” by the
distribution period in the Uniform Lifetime Table in section 1.401(a)(9)-9 of
the Treasury regulations, using the Participant’s age as of the Participant’s
birthday in the “distribution calendar year”; or

                              (B)
if the Participant’s sole “designated beneficiary” for the “distribution
calendar year” is the Participant’s spouse, the quotient obtained by dividing
the “Participant’s account balance” by the number in the Joint and Last
Survivor Table in section 1.401(a)(9)-9 of the Treasury regulations, using the
Participant’s and spouse’s attained ages as of the Participant’s and spouse’s
birthdays in the “distribution calendar year.”

              
(2) Required minimum distributions will be determined under this
subsection (d) beginning with the first “distribution calendar year” and
up to and including the “distribution calendar year” that includes the
Participant’s date of death.

          (e) (1) (A)
If the Participant dies on or after the date distributions begin and there is a
“designated beneficiary,” the minimum amount that will be distributed for each
“distribution calendar year” after the year of the Participant’s death is the
quotient obtained by dividing the “Participant’s account balance” by the longer
of the remaining life expectancy of the Participant or the remaining life
expectancy of the Participant’s “designated beneficiary,” determined as
follows:

                                        (i)
The Participant’s remaining life expectancy is calculated using the age of the
Participant in the year of death, reduced by one for each subsequent year.

                                        (ii)
If the Participant’s surviving spouse is the Participant’s sole “designated
beneficiary,” the remaining life expectancy of the surviving spouse is
calculated for each “distribution calendar year” after the year of the
Participant’s death using the surviving spouse’s age as of the spouse’s
birthday in that year. For “distribution calendar years” after the year of the
surviving spouse’s death, the remaining life expectancy of the surviving spouse
is calculated using the age of the surviving spouse as of the spouse’s birthday
in the calendar year of the spouse’s death, reduced by one for each subsequent
calendar year.

55

                                        (iii)
If the Participant’s surviving spouse is not the Participant’s sole “designated
beneficiary,” the “designated beneficiary’s” remaining life expectancy is
calculated using the age of the beneficiary in the year following the year of
the Participant’s death, reduced by one for each subsequent year.

                              (B)
If the Participant dies on or after the date distributions begin and there is
no “designated beneficiary” as of September 30 of the year after the year of
the Participant’s death, the minimum amount that will be distributed for each
“distribution calendar year” after the year of the Participant’s death is the
quotient obtained by dividing the “Participant’s account balance” by the
Participant’s remaining life expectancy calculated using the age of the
Participant in the year of death, reduced by one for each subsequent year.

                    (2)
(A) Except as provided in subsection (c)(4), if the Participant dies before the
date distributions begin and there is a “designated beneficiary,” the minimum
amount that will be distributed for each “distribution calendar year” after the
year of the Participant’s death is the quotient obtained by dividing the
“Participant’s account balance” by the remaining life expectancy of the
Participant’s “designated beneficiary,” determined as provided in paragraph
(1).

                              (B)
If the Participant dies before the date distributions begin and there is no
“designated beneficiary” as of September 30 of the year following the year of
the Participant’s death, distribution of the Participant’s entire interest will
be completed by December 31 of the calendar year containing the fifth
anniversary of the Participant’s death.

                              (C)
If the Participant dies before the date distributions begin, the Participant’s
surviving spouse is the Participant’s sole “designated beneficiary,” and the
surviving spouse dies before distributions are required to begin to the
surviving spouse under subsection (c)(2)(A), this paragraph (2) will apply as
if the surviving spouse were the Participant.

          (f) For
purposes of this Section 5.9, the following words and phrases shall have the
meanings indicated:

                    (1)
Designated beneficiary – The individual who is designated as the
Beneficiary under Section 2.3 of the Plan and is the “designated beneficiary”
under Code Section 401(a)(9) and section 1.401(a)(9)-1, Q&A 4, of the
Treasury regulations.

                    (2)
Distribution calendar year – A calendar year for which a minimum
distribution is required. For distributions beginning before the Participant’s
death, the first

56

“distribution calendar year” is the calendar year immediately preceding
the calendar year that contains the Participant’s “required beginning date.”
For distributions beginning after the Participant’s death, the first distribution
calendar year is the calendar year in which distributions are required to begin
pursuant to subsection (c)(2). The required minimum distribution for the
Participant’s first “distribution calendar year” will be made on or before the
Participant’s “required beginning date.” The required minimum distribution for
other “distribution calendar years,” including the required minimum
distribution for the “distribution calendar year” in which the Participant’s
“required beginning date” occurs, will be made on or before December 31 of that
“distribution calendar year.”

                    (3)
Life expectancy – Life expectancy as computed by use of the Single Life
Table in section 1.401(a)(9)-9 of the Treasury regulations.

                    (4)
Participant’s account balance – The account balance as of the last
valuation date in the calendar year immediately preceding the “distribution
calendar year” (valuation calendar year), increased by the amount of any
contributions made and allocated or forfeitures allocated to the account
balance as of dates in the valuation calendar year after the valuation date,
and decreased by distributions made in the valuation calendar year after the
valuation date. The account balance for the valuation calendar year includes
any amounts rolled over or transferred to the Plan either in the valuation
calendar year or in the “distribution calendar year” if distributed or
transferred in the valuation calendar year.

                    (5)
Required beginning date – The April 1 of the calendar year following the
later of (A) the calendar year in which the Participant attains age 701⁄2, or (B)
the calendar year in which the Participant retires. Notwithstanding the
preceding sentence, the “required beginning date” of a Participant who is a
“five-percent owner” (as defined in Code Section 416(i)) with respect to the
Plan Year ending in the calendar year in which the Participant attains age 701⁄2
is the April 1 of the calendar year following the calendar year in which the
Participant attains age 701⁄2.

5.10 Valuation
of Accounts

          (a)
All distributions hereunder made on or after October 2, 2006 shall be based
upon the value of the Participant’s Individual Account as determined under this
Section 5.10. All distributions hereunder made prior to October 2, 2006 shall
be based on the value of the 

57

Participant’s
Individual Account as determined under the provisions of this Plan as in effect
on the date of such distribution.

                    The
value of a Participant’s Individual Account upon a distribution hereunder shall
be the sum of paragraphs (1)-(27) below, where:

                    (1)
is the product of (A) the closing Net Asset Value of the Fidelity Contrafund on
the Valuation Date, and (B) the number of shares of such fund allocated to the
Participant’s Individual Account as of such Valuation Date;

                    (2)
is the product of (A) the closing Net Asset Value of the Fidelity Diversified
International Fund on the Valuation Date, and (B) the number of shares of such
fund allocated to the Participant’s Individual Account as of such Valuation
Date;

                    (3)
is the product of (A) the closing Net Asset Value of the Fidelity Equity-Income
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (4)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom
Income Fund on the Valuation Date, and (B) the number of shares of such fund
allocated to the Participant’s Individual Account as of such Valuation Date;

                    (5)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2000
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (6)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2005
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (7)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2010
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (8)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2015
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (9)
is the product of (A) the closing Net Asset Value of the Fidelity
Freedom 2020 Fund on the Valuation Date, and (B) the number of shares of such
fund allocated to the Participant’s
Individual Account as of such Valuation Date;

58

                    (10)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2025
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (11)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2030
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    
(12) is the product of (A) the closing Net Asset Value of the Fidelity Freedom
2035 Fund on the Valuation Date, and (B) the number of shares of such fund
allocated to the Participant’s Individual Account as of such Valuation Date;

                    (13)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2040
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (14)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2045
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (15)
is the product of (A) the closing Net Asset Value of the Fidelity Freedom 2050
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (16)
is the product of (A) the closing Net Asset Value of the Fidelity Growth &
Income Portfolio on the Valuation Date, and (B) the number of shares of such
fund allocated to the Participant’s Individual Account as of such Valuation
Date;

                    (17)
is the product of (A) the closing Net Asset Value of the Fidelity Low Priced
Stock Fund on the Valuation Date, and (B) the number of shares of such fund
allocated to the Participant’s Individual Account as of such Valuation Date;

                    (18)
is the product of (A) the closing Net Asset Value of the Fidelity OTC Portfolio
on the Valuation Date, and (B) the number of shares of such fund allocated to
the Participant’s Individual Account as of such Valuation Date;

                    (19)
is the product of (A) the closing Net Asset Value of the Fidelity Puritan Fund
on the Valuation Date, and (B) the number of shares of such fund allocated to
the Participant’s Individual Account as of such Valuation Date;

59

                    (20)
is the product of (A) the closing Net Asset Value of the Fidelity Spartan U.S.
Equity Index Fund on the Valuation Date, and (B) the number of shares of such
fund allocated to the Participant’s Individual Account as of such Valuation Date;

                    (21)
is the product of (A) the closing Net Asset Value of the Fidelity U.S. Bond
Index Fund on the Valuation Date, and (B) the number of shares of such fund
allocated to the Participant’s Individual Account as of such Valuation Date;

                    (22)
is the product of (A) the closing Net Asset Value of the Lord Abbett Small-Cap
Value Fund (Class Y) on the Valuation Date, and (B) the number of shares of
such fund allocated to the Participant’s Individual Account as of such Valuation
Date;

                    (23)
is the number of shares of the Managed Income Portfolio II Class 3 allocated to
the Participant’s Individual Account as of such Valuation Date; and 

                    (24)
is the product of (A) the closing Net Asset Value of the T. Rowe Price
Institutional Large-Cap Growth Fund on the Valuation Date, and (B) the number
of shares of such fund allocated to the Participant’s Individual Account as of
such Valuation Date;

                    (25)
is the product of (A) the per unit value of the Employer Stock Fund on the
Valuation Date, and (B) the number of units of such fund allocated to the
Participant’s Individual Account as of such Valuation Date;

                    (26)
is the product of (A) the per unit Value of Employer Stock Fund on the
Valuation Date, and (B) the number of units of such fund allocated to the
Participant’s Individual Account as of such Valuation Date;

                    (27)
effective prior to December 30, 2006, is the product of (A) the closing Net
Asset Value of the Corning Stock Fund and the Covance Stock Fund on the
Valuation Date, and (B) the number of shares of such funds allocated to the
Participant’s Individual Account as of such Valuation Date.

5.11 Direct
Rollovers

          (a)
Notwithstanding any provision of the Plan to the contrary that would otherwise
limit a distributee’s election under this Section, a distributee may elect, at
the time and in the manner prescribed by the Committee, to have any portion of
an eligible rollover distribution paid directly to an eligible retirement plan
specified by the distributee in a direct rollover.

          (b)
(1) An “eligible rollover distribution” is any distribution of all or any
portion of the balance to the credit of the distributee, except that an
eligible rollover distribution does not 

60

include: any
distribution that is one of a series of substantially equal periodic payments
(not less frequently than annually) made for the life (or life expectancy) of
the distributee or the joint lives (or joint life expectancies) of the
distributee and the distributee’s designated beneficiary, or for a specified
period of ten years or more; any distribution to the extent such distribution
is required under Section 401(a)(9) of the Code; and any hardship distribution.
For purposes of the preceding sentence, a portion of a distribution shall not
fail to be an “eligible rollover distribution” merely because the portion
consists of after-tax employee contributions which are not includible in gross
income. However, such portion may be paid only to an individual retirement
account or annuity described in Code Section 408(a) or (b), or to a qualified
defined contribution plan described in Code Section 401(a) or 403(a) that
agrees to separately account for amounts so transferred, including separately
accounting for the portion of such distribution which is includible in gross
income and the portion of such distribution which is not so includible.

                    (2)
An “eligible retirement plan” is an individual retirement account described in
Code Section 408(a), an individual retirement annuity described in Code Section
408(b), an annuity plan described in Code Section 403(a), a qualified
retirement plan described in Code Section 401(a), an eligible deferred compensation
plan described in Code Section 457(b) which is maintained by an eligible
employer described in Code Section 457(e)(1)(A), or an annuity contract
described in Code Section 403(b), that accepts the distributee’s eligible
rollover distribution. 

                    (3)
A “distributee” includes an employee or former employee. In addition, the
employee’s or former employee’s surviving spouse and the employee’s or former
employee’s spouse or former spouse who is the alternate payee under a qualified
domestic relations order, as defined in Code Section 414(p), are distributees
with regard to the interest of the spouse or former spouse. Effective for
distributions after December 31, 2007, a distributee shall also include a
non-spouse Beneficiary. However, for purposes of a distribution to a non-spouse
beneficiary, an eligible retirement plan, as described in Section 5.11(b)(2) of
the Plan, shall be limited to an individual retirement account described in
Code Section 408(a) or an individual retirement annuity as described in Code
Section 408(b).

                    (4)
A “direct rollover” is a payment by the Plan to the eligible retirement plan
specified by the distributee.

61

5.12 Payment
to Alternate Payee Under QDRO

          (a)
Notwithstanding any other provision of this Plan, once the Committee determines
that a domestic relations order is a qualified domestic relations order
(“QDRO”) within the meaning of ERISA Section 206(d)(3), unless the QDRO
specifically provides otherwise, the alternate payee specified in the QDRO may,
through an Appropriate Request, elect to receive a distribution of the amount
assigned to the alternate payee in the QDRO in accordance with Section 5.6(a).
The Committee shall direct the Trustee to distribute to the alternate payee
such amount as soon as administratively feasible following receipt of an
Appropriate Request made by the alternate payee. 

          (b)
Effective November 1, 2003, and notwithstanding any other provision of the
Plan, upon receipt of an executed QDRO, upon receipt of a joinder that
references the Plan, or upon direction provided the Plan’s recordkeeper by the
Committee, the Plan’s recordkeeper shall place a disbursement restriction upon
the Participant’s Individual Account. The scope and duration of such
disbursement restriction shall be determined by procedures adopted by the
Committee and applied in a uniform and nondiscriminatory manner.

          (c)
Effective November 1, 2003, an administrative charge, in an amount determined
by the Committee, may be imposed on the Individual Account of a Participant who
is subject to a domestic relations order received on or after such date and on
the separate account established on behalf of the alternate payee specified in
the order. Such charge shall be imposed pursuant to procedures adopted by the
Committee and applied in a uniform and nondiscriminatory manner.

5.13 Distribution Upon Severance from Employment

          Effective
January 1, 2002, a Participant’s Employee Regular Pre-Tax Sub-Account and
Employee Pre-Tax Catch-Up Sub-Account may be distributed upon a “severance from
employment,” as such term is defined under Code Section 401(k)(2)(B)(i)(I).
However, such a distribution shall be subject to the other provisions of the
Plan regarding distributions. The preceding provisions shall apply in the case
of a “severance from employment” which occurs before January 1, 2002 or on or
after such date. 

62

ARTICLE
VI
LOANS AND WITHDRAWALS

6.1 Loans
to Participants

          A
Participant who is a “party in interest” as defined in ERISA Section 3(14) may,
by making an Appropriate Request, request a loan from the Trust Fund. The
following additional rules shall apply:

          (a)
Loans shall be made available to all eligible Participants on a reasonably
equivalent basis; provided, however, that the Committee shall retain the power
to approve or decline a loan and may make reasonable distinctions based upon
creditworthiness, other obligations of the Participant, state laws affecting
payroll deductions, and any other factors that may adversely affect the
Employer’s ability to deduct loan repayments from a Participant’s pay.

          (b)
A Participant may only have one loan outstanding at any time. For purposes of
this subsection (b), a loan that is deemed in default under subsection (h)
shall be treated as outstanding.

          (c)
The minimum new loan amount shall be $1,000. If a Participant’s Individual
Account balance is insufficient to support the minimum loan amount loan because
of the maximum loan restrictions set forth below, no loan shall be made. The
maximum amount of any loan, when added to the outstanding balance of any
existing loan from this Plan, shall be the lesser of (1) and (2):

                    (1)
$50,000 reduced by the excess of the highest outstanding balance of loans from
the Plan during the one-year period ending on the day before the date the loan
is made over the outstanding balance of loans from the Plan on the date the
loan is made.

                    (2)
One-half of the value of the vested portion of the Participant’s Individual
Account on the date the loan is made.

                    For
purposes of this subsection (c), a loan that is deemed in default under
subsection (h) shall be treated as an existing loan, and interest accrued on
such loan since it was deemed in default shall be considered part of the
outstanding balance of such loan.

          (d)
All loans shall be repayable over a period of not more than five years, except
that a loan used by the Participant to acquire any dwelling unit which within a
reasonable time is to 

63

be used
(determined at the time the loan is made) as a principal residence of the
Participant shall be repayable over a period of not more than 10 years.

          (e)
Each loan shall be secured by one-half of the value of the vested portion of
the Participant’s Individual Account balance; shall bear interest at a rate of
one percent (1%) above the Prime Rate in effect on the last day of the calendar
quarter coincident with or next preceding the calendar quarter in which the
loan is applied for; shall be repaid in accordance with a reasonable repayment
schedule requiring substantially level payments of principal and interest; and
shall be evidenced by a written promissory note setting forth the terms of the
loan. A Participant may prepay the entire outstanding loan balance without
penalty. Except for an outstanding loan upon a Participant’s retirement, Total
and Permanent Disability or termination of employment pursuant to subsection
(i), all loans shall be repaid by payroll deduction.

          (f)
There may be an administrative charge imposed on each new loan in an amount
determined by the Committee.

          (g)
Each loan shall be considered a separate investment option of the Individual
Account of the Participant. Notwithstanding Section 4.1(c), when a loan is
made, the amount of the loan shall be withdrawn from sub-accounts within the
Participant Individual Account among the separate Investment Options in which
each sub-account is invested and transferred to a segregated loan account
maintained in his name. The loan amount shall be withdrawn from the
sub-accounts within the Individual Account in the following order: (1) the
Partnership Sub-Account; (2) the Pre-1999 Cash Match Sub-Account; (3) the
Post-1999 Cash Match Sub-Account; (4) the Pre-1999 Stock Match Sub-Account; (5)
the Post-1999 Stock Match Sub-Account; (6) the vested portion of the Prior
Employer Match Sub-Account; (7) the vested portion of the Prior ESOP Employer
Stock Sub-Account; (8) the vested portion of the Prior ESOP Employer
Contributions Sub-Account; (9) the vested portion of the Prior Unilab Employer
Contribution Sub-Account; (10) the Prior LabOne Money Purchase Plan Sub-Account
or the Prior LabOne Employer Match Sub-Account as applicable; (11) the ESOP
Diversification Sub-Account; (12) the Rollover Sub-Account; (13) the Prior Plan
Rollover Sub-Account; (14) the Money Purchase Pension Plan Sub-Account; (15)
the Prior Plan Employer Contribution Sub-Account; (16) the Prior Profit Sharing
Sub-Account; (17) the Prior Plan Employer Qualified Sub-Account; (18) the
Qualified Nonelective Contribution Sub-Account; (19) the Employee Regular
Pre-Tax Sub-Account; (20) the Employee Pre-Tax Catch-Up Sub-Account; (21) the 

64

Employee
After-Tax Sub-Account; (22) Vested Employer Stock Dividend Sub-Account;
and (23) Vested Money Purchase Plan Dividend Sub-Account. Within each
sub-account, the loan amount shall be withdrawn from the separate Investment
Options on a pro-rata basis based on the Participant’s outstanding Investment
Option specification. Payments of principal and interest against a loan shall
thereafter be allocated ratably among the sub-accounts from which the loan was
withdrawn and invested in accordance with a Participant’s outstanding Investment
Option specification.

          (h)
In the event a Participant defaults on a loan from this Plan, the Plan shall
not foreclose on so much of the Participant’s Individual Account as is given as
collateral for the loan until a distributible event occurs under the Plan. For
purposes of this Plan and subject to subsection (j), a Participant shall be
deemed to be in default on a loan if he fails to make any installment payment
within 90 days after the due date for such payment. Except for purposes of
subsection (c), upon default, interest on the outstanding loan balance
shall cease to accrue.

          (i)
In the event of the retirement, Total and Permanent Disability, death, or
termination of employment of a Participant, the unpaid balance of any
outstanding loan to such Participant, together with accrued interest, shall be
immediately due and payable and shall be satisfied out of the Participant’s
Individual Account prior to distribution (notwithstanding the provisions of
Section 12.5) if not satisfied by payment in full prior to such distribution.
Notwithstanding the preceding sentence, effective October 1, 2000, upon
the retirement, Total and Permanent Disability or termination of employment of
a Participant with an outstanding loan, such Participant may elect to make loan
payments out of his own personal funds under such procedures as have been
adopted by the Committee.

          (j)
If an Employee who has an outstanding loan incurs a leave of absence, ceases
loan repayment, and his rate of pay (after income and employment tax
withholding) is not sufficient to meet the required repayment under the terms
of the loan, then the Committee shall not deem that a default has occurred for
a period equal to the lesser of (1) the length of the leave of absence, or (2)
one year. Upon the end of the period set forth in the preceding sentence, the
term of the Employee’s loan will be extended by the length of such period (but
in no event beyond the applicable maximum term set forth in subsection (d)),
and the Employee’s loan payments shall be reamortized over the remaining period
of repayments. Notwithstanding the preceding provisions, loan repayments during
a period of qualified military service will be 

65

suspended
under this Plan as permitted under Code Section 414(u)(4). When an Employee
returns from the military service, the term of the Employee’s loan will be
extended by the length of the service (even if such extended repayment period
exceeds the applicable maximum term set forth in subsection (d)), and the
Employee’s loan payments shall be reamortized over the remaining period of
repayments.

          (k)
The Committee shall apply the provisions of this Section in a uniform and
nondiscriminatory manner which is not inconsistent with Department of Labor
regulations at 29 C.F.R. §2550.408b-1.

          (l)
A married CPF Pension Plan Participant or a married LabOne Pension Participant
may not make a loan under this Section 6.1 unless, during the 90-day
period ending on the date on which the loan is secured, his spouse has filed a
written consent with the Committee, consenting to such loan, which consent
shall be notarized, or witnessed by a member of the Committee, and shall
acknowledge the effect of the loan. The preceding sentence also shall apply to
a married AML-West Plan Participant who makes a loan under this Section 6.1
before May 1, 2003 and to a married Unilab Plan Participant who makes a loan
under this Section 6.1 before May 1, 2004.

          (m)
Loans associated with Hurricane Katrina for an affected Participant shall be
subject to the following rules:

                    (1)
The loan must be made after August 24, 2005 and no later than December 31,
2007.

                    (2)
Sections 6.1(c)(1) and (2) shall not be applicable and the maximum loan shall
be the lesser of $100,000 or the vested portion of the Participant’s Individual
Account on the date the loan is made.

                    (3)
Notwithstanding the preceding, if a Participant has an outstanding loan during
the period from August 24, 2005 through December 31, 2006, any loan payments
due on or after August 25, 2005 through December 31, 2006 may be deferred for
one year (with subsequent repayments adjusted) and the loan period may be
extended for the period of delay.

6.2 Hardship
Withdrawals

          (a)
Upon making an Appropriate Request, and with the approval of the Committee, a
Participant shall be allowed to withdraw all or part of the value of his
Individual Account which is available under subsection (e) while still employed
by the Employer. Withdrawn amounts may

66

 not be repaid to the Trust Fund. Withdrawals
shall be charged against the sub-accounts within the Individual Account in the
following order: (1) the Vested Employer Stock Dividend Sub-Account (2) the
Employee After-Tax Sub-Account; (3) the Rollover Sub-Account; (4) the Prior
Plan Rollover Sub-Account; (5) the ESOP Diversification Sub-Account; (6) the
Employee Regular Pre-Tax Sub-Account; (7) the Employee Pre-Tax Catch-Up
Sub-Account; (8) the Pre-1999 Cash Match Sub-Account; (9) the Pre-1999 Stock
Match Sub-Account; (10) the vested portion of the Prior Employer Match
Sub-Account; (11) the vested portion of the Prior ESOP Employer Stock
Sub-Account; (12) the vested portion of the Prior ESOP Employer Contributions
Sub-Account; (13) the vested portion of the Prior Unilab Employer Contribution
Sub-Account; (14) the Prior LabOne Employer Match Sub-Account; (15) the Prior
Profit Sharing Sub-Account; (16) the Partnership Sub-Account; (17) the Prior
Plan Employer Contribution Sub-Account; and (18) the Prior Plan Employer
Qualified Sub-Account. Within each sub-account, withdrawals shall be charged
against the separate Investment Options on a pro-rata basis based on the
Participant’s outstanding Investment Option specification.

          (b)
A Participant may only make a withdrawal under this Section 6.2 if the
withdrawal is made on account of an immediate and heavy financial need of the
Participant, as determined under subsection (c)(1), and is necessary to satisfy
the financial need, as determined under subsection (c)(2). The determination of
the existence of financial hardship and the amount necessary to be withdrawn to
satisfy the immediate financial need created by the hardship shall be made by
the Committee in a uniform and nondiscriminatory manner, in accordance with the
standards and restrictions set forth in subsection (c) below. A Participant
requesting a withdrawal hereunder may be required to submit whatever
documentation the Committee, in its sole discretion, deems necessary to establish
the existence of financial hardship and the amount necessary to be withdrawn to
satisfy the financial need created by the hardship.

          (c)
(1) Immediate and heavy financial need. A withdrawal will be considered to be
made on account of an immediate and heavy financial need of the Participant for
purposes of subsection (b) only if it is for:

                              (A)
Expenses for (or necessary to obtain) medical care that would be deductible
under Code Section 213(d) (determined without regard to whether the expenses
exceed 7.5% of adjusted gross income);

67

                              (B)
Costs directly related to the purchase of a principal residence for the
Participant (excluding mortgage payments);

                              (C)
Payment of tuition, related educational fees, and room and board expenses, for
up to the next 12 months of post-secondary education for the Participant, his
spouse, children, or dependents (as defined in Code Section 152 without regard
to Code Sections 152(b)(1), (b)(2) and (d)1)(B);

                              (D)
Payments necessary to prevent the eviction of the Participant from his
principal residence or foreclosure on the mortgage of the Participant’s
principal residence; 

                              (E)
Payments for burial or funeral expenses for the Participant’s deceased parent,
spouse, children, or dependents (as defined in Code Section 152 without regard
to Code Section 152(d)(1)(B); 

                              (F)
Expenses for the repair of damage to the Participant’s principal residence that
would qualify for the casualty deduction under Code Section 165 (determined
without regard to whether the loss exceeds 10% of adjusted gross income); or

                              (G)
Expenses associated with the Participant’s hardship resulting from Hurricane
Katrina provided such withdrawal is made on or after August 24, 2005 and no
later than December 31, 2007 and it is not in an amount greater than $100,000.

                         (2)
Amount necessary to satisfy the need. A withdrawal will be considered to be in
an amount necessary to satisfy a Participant’s need under paragraph (1) for
purposes of subsection (b) only if:

                              (A)
It does not exceed the amount of the need under paragraph (1) above;

                              (B)
The Participant has obtained all non-hardship distributions and non-taxable
loans he is eligible for and is able to provide collateral for under any plan
the Employer may sponsor (including this Plan); 

                              (C)
The Participant may not make any Employee Pre-Tax Contributions under Section
3.1 for a period of six months after his withdrawal, nor may he make any other
elective contributions to any Employer plan as described in Treasury Regulation
§1.401(k)-1(d)(2)(iv)(B)(4); and

                              (D)
If a withdrawal is made pursuant to Section 6.2(c)(1)(G), then the requirements
of Section 6.2(c)(2) shall not be applicable.

68

                                        Notwithstanding
subparagraphs (A) through (C), a Participant’s withdrawal may be considered to
be in an amount necessary to satisfy a need under paragraph (1) if it satisfies
a method prescribed by the Commissioner of Internal Revenue under Treasury Regulation
§1.401(k)-1(d)(2)(iv)(C).

                              (E)
After December 31, 2007, a Participant may make a hardship withdrawal under
this Section 6.2 for the reasons described in Sections 6.2(c)(1)(A), (C) and
(E) as it relates to the Participant’s primary Beneficiary in the same manner
as a hardship withdrawal for a spouse or other dependent. Said hardship
withdrawal must satisfy all requirements of this Section.

          (d)
In addition to the amount necessary to meet the immediate financial need
created by the hardship, the Participant may, at his election, also withdraw
any amount necessary to cover withholding for federal income tax purposes.

          (e)
A Participant’s hardship withdrawal under this Section 6.2 shall be limited to
the aggregate of all his Employee Pre-Tax Contributions made prior to the
withdrawal (excluding earnings thereon allocated to his Employee Pre-Tax
Sub-Account as of a date after December 31, 1988), reduced by the amount
of any prior withdrawal of such Employee Pre-Tax Contributions, plus the value
of his Employee After-Tax Sub-Account, the value of his Rollover Sub-Account,
the value of his Prior Plan Rollover Sub-Account; the value of the ESOP
Diversification Sub-Account, the value of his Pre-1999 Cash Match Sub-Account,
the value of his Pre-1999 Stock Match Sub-Account, the value of the vested
portion of his Prior Employer Match Sub-Account, the value of the vested
portion of his Prior ESOP Employer Stock Sub-Account, the value of the vested
portion of his Prior ESOP Employer Contributions Sub-Account, the value of the
vested portion of his Prior Unilab Employer Contribution Sub-Account, the value
of his Prior Profit Sharing Sub-Account, the value of his Partnership
Sub-Account, the value of his Prior Plan Employer Contribution Sub-Account, and
the value of his Prior Plan Employer Qualified Sub-Account.

6.3 Non-Hardship
Withdrawals

          (a)
In addition to the withdrawals available under Section 6.2, but no more than
once in any 12-month period, a Participant shall be allowed to withdraw all or
part of the value of his Employee After-Tax Sub-Account for any reason.
Notwithstanding the preceding sentence, an AML-East Plan Participant shall be
allowed to make up to two withdrawals from his Employee

69

After-Tax
Sub-Account in any 12-month period. Within the Employee After-Tax Sub-Account,
withdrawals shall be charged against the separate Investment Options on a
pro-rata basis based on the Participant’s outstanding Investment Option
specification. 

          (b)
Effective January 1, 2002, in addition to the withdrawals available under
Section 6.2, a Participant shall be allowed to withdraw all or part of the
value of the vested portion of his Individual Account upon attainment of age
591⁄2. Withdrawals shall be charged against the sub-accounts within the
Individual Account in the following order: (1) Vested Employer Stock Dividend
Sub-Account; (2) the Employee After-Tax Sub-Account; (3) the Rollover
Sub-Account; (4) the Prior Plan Rollover Sub-Account; (5) the ESOP Diversification
Sub-Account; (6) the Employee Regular Pre-Tax Sub-Account; (7) the Qualified
Nonelective Contribution Sub-Account; (8) the Employee Pre-Tax Catch-Up
Sub-Account; (9) the Pre-1999 Cash Match Sub-Account; (10) the Post-1999 Cash
Match Sub-Account; (11) the Pre-1999 Stock Match Stock Match Sub-Account; (12)
the Post-1999 Stock Match Sub-Account; (13) the Prior Employer Match
Sub-Account; (14) the vested portion of the Prior ESOP Employer Stock
Sub-Account; (15) the vested portion of the Prior ESOP Employer Contributions
Sub-Account; (16) the vested portion of the Prior Unilab Employer Contribution
Sub-Account; (17) the Prior LabOne Employer Match Sub-Account, (18) the Prior
Profit Sharing Sub-Account; (19) the Partnership Sub-Account; (20) the Prior
Plan Employer Contribution Sub-Account; and (21) the Prior Plan Employer
Qualified Sub-Account.

          (c)
In addition to the withdrawals available under Section 6.2, a MedPlus Plan
Participant, a LabPortal Plan Participant, an AML-East Plan Participant, an
AML-West Plan Participant, a Unilab Plan Participant, or a LabOne 401(k) Plan
Participant shall be allowed to withdraw all or part of the value of his Prior
Plan Rollover Sub-Account for any reason. Within the Prior Plan Rollover
Sub-Account, withdrawals shall be charged against the separate Investment
Options on a pro-rata basis based on the Participant’s outstanding Investment
Option specification.

          (d) Any
withdrawal elected pursuant to this Section 6.3 shall be made through an
Appropriate Request. Any withdrawal elected under this Section 6.3 shall be
paid as soon as administratively feasible following receipt of the Appropriate
Request. Withdrawn amounts may not be repaid to the Trust Fund.

70

          (e)
Notwithstanding any other provision of this Section 6.3, (1) in no event may a
CPF Pension Plan Participant be allowed to make a withdrawal from his Money
Purchase Pension Plan Sub-Account or may a LabOne Pension Plan Participant be
allowed to make a withdrawal from his Prior LabOne Money Purchase Plan
Sub-Account.

6.4 Withdrawal
of Dividends

          (a)
In accordance with uniform procedures established by the Committee, a
Participant:

                    (1)
may elect on a quarterly basis to receive a direct payment of cash dividends on
Employer Stock otherwise allocable to his or her Individual Account; or

                    (2)
may reinvest such dividends, in which case they shall be allocated to his or
her Individual Account.

                    In
the event a Participant who has not made an election under Article V to
commence receiving distribution of his or her Individual Account does not file
an election pursuant to this Section 6.4(a)(1), the Participant will be deemed
to have elected reinvestment in accordance with subsection (2) above. If a
Participant has made an election under Article V to commence receiving
distribution of his or her Individual Account which is pending during the ten
(10) business day period which begins fifteen (15) business days prior to the
dividend payment date, and does not file an election pursuant to this Section
6.4(a)(1), the Participant will be deemed to have elected reinvestment in
accordance with subsection (2) above only with respect to the portion of his or
her Individual Account which is not being distributed. If a Participant has
made a request for a hardship withdrawal pursuant to Section 6.2 which is
pending during the ten (10) business day period which begins fifteen (15)
business days prior to the dividend payment date or has had a hardship
withdrawal approved during such period, the Participant will be deemed to have
elected a direct cash payment in accordance with subsection (1) above for that
quarterly dividend payment and such election will remain in effect for future
dividend payments until changed.

                    In
no event shall any distribution of dividends paid into the Trust Fund be made
pursuant to this Section 6.4 later than ninety (90) days following the end of
the Plan Year in which dividends were paid into the Trust Fund.

                    Stock
dividends shall be reinvested in the Employer Stock Fund.

71

          (b)
A Participant’s election to receive direct payment of dividends under Section
6.4(a)(1) must be made during the ten (10) business day period which begins
fifteen (15) business days prior to the dividend payment date. The dividends
with respect to which a Participant may elect a direct payment under Section
6.4(a)(1) are 100% of the cash dividends on shares of Employer Stock in the
Employer Stock Fund and allocated to the Participant’s Individual Account as of
the record date for the dividend (which, for Plan purposes, shall be determined
on the “ex dividend date,” e.g., three (3) business days prior to the record
date), provided, however, that the total cash dividend that would be payable if
the Participant elected a direct payment of 100% of dividends subject to his or
her election must equal or exceed a de minimis amount. The initial de minimis
amount is $10.

          (c)
Any election under this Section 6.4 shall continue in effect until revoked
prospectively by the Participant. Any such election or revocation shall be made
at such time and in such manner as the Committee shall specify.

          (d)
If, with respect to any cash dividends declared on shares of Employer Stock,
the Board or Committee authorizes the direct payment under Section 6.4(a)(1) of
less than 100% of such cash dividends, the Participant may elect, in accordance
with uniform procedures established by the Committee, a direct payment under
this Section 6.4 of any percentage permitted by the Board or Committee.

6.5 Certain
Dividends

          (a)
Cash dividends on Employer Stock which are received on a Participant’s Prior
LabOne Employer Match Sub-Account, Prior ESOP Employer Contribution
Sub-Account, Prior Employer Match Sub-Account and Prior Unilab Employer
Contribution Sub-Account which are allocated to the Employer Stock Fund shall
be directed the Vested Employer Stock Dividend Sub-Account when received by the
Trust and shall become 100% vested upon receipt.

          (b)
Cash dividends on Employer Stock which are received on a Participant’s Prior
LabOne Money Purchase Plan Sub-Account which are allocated to the Employer
Stock Fund shall be directed the Vested Money Purchase Plan Dividend
Sub-Account when received by the Trust and shall become 100% vested upon
receipt.

6.6 Qualified
Reservist Distribution

          (a)
Upon making an Appropriate Request, a Participant who is a member of a reserve
component or is ordered or called to active duty for a period in excess of 179
days or an 

72

indefinite
period shall be allowed to withdraw all or part of the value of his Individual
Account attributable to part or all of his Employee Pre-tax Contributions.

          (b)
In order to be eligible for a distribution described in (a) above, the
Participant must be ordered or called to active duty after September 11, 2001
and before December 31, 2007.

          (c)
The distribution under this Section must be made during the period beginning on
the date of such order or call and ending no later than the close of the period
of active duty.

73

ARTICLE VII
TRUST FUND

7.1 Contributions

          Contributions
by the Employer and Participants as provided for in Article III shall be paid
over to the Trustee. All Contributions by the Employer shall be irrevocable,
except as otherwise provided in this Plan and may be used only for the
exclusive benefit of the Participants and their Beneficiaries. 

7.2 Trustee

          The
Corporation will maintain an agreement with the Trustee whereunder the Trustee
will receive, invest and administer as a trust fund Contributions made under
this Plan in accordance with the Trust Agreement.

          Such
Trust Agreement is incorporated by reference as a part of the Plan, and the
rights of all persons entitled to benefits hereunder are subject to the terms
of the Trust Agreement. The Trust Agreement specifically provides, among other
things, for the investment and reinvestment of the Fund and the income thereof,
the management of the Fund, the responsibilities and obligations of the
Trustee, removal of the Trustee and appointment of a successor, accounting by
the Trustee and the disbursement of the Fund.

          Subject
to a Participant’s Investment Option specification, the Trustee shall, in
accordance with the terms of such Trust Agreement, accept and receive all sums
of money paid to it from time to time by the Employer, and shall hold, invest,
reinvest, manage and administer such moneys and the increment, increase,
earnings and income thereof as a trust fund for the exclusive benefit of the
Participants and their Beneficiaries and for the payment of reasonable expenses
of administering the Plan.

7.3 Employer
Stock Fund

          The
Employer Stock Fund shall be invested in the common stock of the Employer,
provided such stock qualifies as qualifying employer securities within the
meaning of ERISA Section 407(d)(5). The portion of the Plan comprised of the
Employer Stock Fund shall be an employee stock ownership plan under Code
Section 4975(e)(7) which shall include the share distribution requirements of
Code Section 409(h) and the participant pass through voting rights required
under Code Section 409(e). The level of Plan assets invested in such fund shall
be 

74

determined by
Participant’s Investment Option specifications, and may consist of up to 100%
of all Plan assets.

75

ARTICLE VIII
FIDUCIARIES

8.1 General

          Each
Fiduciary who is allocated specific duties or responsibilities under the Plan
or any Fiduciary who assumes such a position with the Plan shall discharge his
duties solely in the interest of the Participants and Beneficiaries and for the
exclusive purpose of providing such benefits as stipulated herein to such
Participants and Beneficiaries, or of defraying reasonable expenses of
administering the Plan. Each Fiduciary in carrying out such duties and
responsibilities shall act with the care, skill, prudence, and diligence under
the circumstances then prevailing that a prudent person acting in a like
capacity and familiar with such matters would use in exercising such authority
or duties.

          A
Fiduciary may serve in more than one Fiduciary capacity and may employ one or
more persons to render advice with regard to his Fiduciary responsibilities. If
the Fiduciary is serving as such without compensation, all expenses reasonably
incurred by such Fiduciary shall be reimbursed by the Employer or, at the
Corporation’s direction, from the assets of the Trust.

          A Fiduciary
may allocate any of his responsibilities for the operation and administration
of the Plan. In limitation of this right, a Fiduciary may not allocate any
responsibilities as contained herein relating to the management or control of
the Fund except (1) through the employment of an investment manager as provided
in Section 8.4 and in the Trust Agreement relating to the Fund, or (2) to the
extent Participants specify their own Investment Options.

8.2 Corporation

          The
Corporation established and maintains the Plan for the benefit of its Employees
and those of participating Employers and of necessity retains control of the
operation and administration of the Plan. The Corporation is the
“administrator” of the Plan within the meaning of ERISA Section 3(16)(A). The
Corporation in accordance with specific provisions of the Plan has, as herein
indicated, delegated certain of these rights and obligations to the Employer,
the Trustee and the Committee and these parties shall be solely responsible for
these, and only these, delegated rights and obligations.

76

8.3 Employer

          The
Employer shall indemnify each member of the Board of Directors, the Committee,
and any of its employees to whom any fiduciary responsibility with respect to
the Plan is allocated or delegated, from and against any and all liabilities,
costs and expenses incurred by such persons as a result of any act or omission
to act in connection with the performance of their fiduciary duties,
responsibilities and obligations under the Plan and under ERISA, except for
liabilities and claims arising from such fiduciary’s willful misconduct or
gross negligence. For such purpose, the Employer may obtain, pay for and keep
current a policy or policies of insurance. Where such policy or policies of
insurance are purchased, there shall be no right to indemnification under this
Section 8.3, except to the extent of any deductible amount under the policy or
policies or with regard to covered claims in excess of the insured amount. No
Plan assets may be used for any indemnification.

          The
Employer shall supply such full and timely information for all matters relating
to the Plan as (a) the Committee, (b) the Trustee, and (c) the accountant
engaged on behalf of the Plan by the Corporation may require for the effective
discharge of their respective duties.

8.4 Trustee

          The
Trustee, in accordance with the Trust Agreement, shall have authority to manage
the Fund, except that (1) the Committee may in its discretion employ at any
time and from time to time an investment manager (as defined in section 3(38)
of ERISA) to direct the Trustee with respect to all or a designated portion of
the assets comprising the Fund, and (2) Participants may specify their own
Investment Options.

8.5 Committee

          The
Board shall appoint a Benefits Administration Committee of not less than three
persons to hold office during the pleasure of the Corporation. No compensation
shall be paid members of the Committee from the Fund for service on such
Committee.

          The
Committee shall choose from among its members a chairman and a secretary. Any
action of the Committee shall be determined by the vote of a majority of its
members. Either the chairman or the secretary may execute any certificate or
other written direction on behalf of the Committee.

          The
Committee shall hold meetings upon such notice, at such place or places and at
such time or times as the Committee may from time to time determine. Meetings
may be called by the

77

chairman or
any two members. A majority of the members of the Committee at the time in
office shall constitute a quorum for the transaction of business. The Committee
may also act by written consent in lieu of a meeting.

          A
Committee member may resign at any time by giving written notice of his
resignation to the Corporation at least thirty days in advance, unless the
Corporation shall accept shorter notice. The Board shall appoint replacement
Committee members. Any Committee member who was employed by the Employer when
appointed to the Committee shall automatically be deemed to have resigned from
the Committee effective as of the date he ceases to be employed by the
Employer, unless the Corporation shall affirmatively act to keep said member on
the Committee.

          Nothing
herein shall prevent a Committee member from being a Participant, or from
acting on Plan matters which affect himself by virtue of affecting all
Participants generally. However, a Committee member shall not act on any matter
which affects himself specially. If application of the preceding sentence
results in there not being a quorum to act on any matter, the Corporation shall
appoint the necessary number of temporary Committee members to take the action.

          The
Committee may add, change or delete the available Investment Options at any
time.

          In
accordance with the provisions hereof, the Committee has been delegated certain
administrative functions relating to the Plan with all powers necessary to
enable it properly to carry out such duties.

          The
Committee shall have discretionary authority to construe the Plan, and to
determine, consistent with the terms of the Plan, all questions that may arise
thereunder relating to (a) the eligibility of individuals to participate in the
Plan, (b) the amount of benefits to which any Participant or Beneficiary may
become entitled hereunder, and (c) any situation not specifically covered by
the provisions of the Plan. The determination of the Committee shall be final
and binding on all interested parties. All disbursements by the Trustee, except
for the ordinary expenses of administration of the Fund or the reimbursement of
reasonable expenses at the direction of the Corporation as provided herein,
shall be made upon, and in accordance with, the written directions of the
Committee. When the Committee is required in the performance of its duties
hereunder to administer or construe, or to reach a determination under any of
the provisions of the Plan, it shall do so on a uniform, equitable and
nondiscriminatory basis.

78

8.6 Claims
for Benefits

          All
claims for benefits under the Plan shall be submitted to the Committee which
shall have the responsibility for determining the eligibility of any
Participant or Beneficiary for benefits. All claims for benefits shall be made
in writing and shall set forth the facts which such Participant or Beneficiary
believes to be sufficient to entitle him to the benefit claimed. The Committee
may adopt forms for the submission of claims for benefits in which case all
claims for benefits shall be filed on such forms. The Committee shall provide
Participants and Beneficiaries with all such forms.

          Upon
receipt by the Committee of a claim for benefits, it shall determine all facts
which are necessary to establish the right of an applicant to benefits under
the provisions of the Plan and the amount thereof as herein provided. The
claimant shall be notified in writing by the Committee of its decision with respect
to such claimant’s claim within 90 days after the receipt of written request
for benefits.

          If
any claim for benefits is denied, the notice shall be written in a manner
calculated to be understood by the claimant and shall include:

	
 
	
 
	
 

	
 
	
(a) The
 specific reason or reasons for the denial;

	
 
	
 
	
 

	
 
	
(b) Specific
 references to the pertinent Plan provisions on which the denial is based;

	
 
	
 
	
 

	 
	(c) A description of any additional
        material or information necessary for the applicant to perfect the claim
        and an explanation why such material or information is necessary; 

	
 
	
 
	
 

	
 
	
(d) An
 explanation of the Plan’s claim review procedures; and

	
 
	
 
	
 

	 
	(e) A statement of the claimant’s
        right to bring a civil action under ERISA Section 502(a) following denial
        of his appeal.

          If
special circumstances require an extension of time for processing the initial
claim, a written notice of the extension and the reason therefor shall be
furnished to the claimant by the Committee before the end of the initial 90-day
period. In no event shall such extension exceed 180 days after the receipt of
the initial claim for benefits.

8.7 Denial
of Benefits – Review Procedure

          In
the event a claim for benefits is denied, the claimant or his duly authorized
representative, at the claimant’s sole expense, may appeal the denial by filing
a written request for review with the Committee within 60 days of the receipt
of written notice of denial or 60 days from the date such claim is deemed to be
denied. In pursuing such appeal, the claimant or

79

his duly
authorized representative may review pertinent Plan documents, and may submit
issues and comments in writing.

          The
decision on review shall be made by the Committee within 60 days of receipt of
the request for review, unless special circumstances require an extension of
time for processing, in which case a decision shall be rendered as soon as
possible, but not later than 120 days after receipt of a request for review. If
such an extension of time is required, written notice of the extension shall be
furnished to the claimant before the end of the original 60-day period, and
such extension notice shall indicate the special circumstance requiring an
extension of the time and the date by which the Committee expects to render a
decision. The decision on review shall be in writing, shall be written in a
manner calculated to be understood by the claimant, and shall include: 

	
 
	
 
	
 

	
 
	
(a) The
 specific reason or reasons for the denial;

	
 
	
 
	
 

	
 
	
(b) Specific
 references to the pertinent Plan provisions on which the denial is based;

	
 
	
 
	
 

	 
	(c) A statement that the claimant
        is entitled to receive, upon request and free of charge, reasonable access
        to and copies of all documents, records or other information relevant
        to the claimant’s claims; and

	
 
	
 
	
 

	
 
	
(d) A
 statement of the claimant’s right to bring a civil action under ERISA Section
 502(a).

          If
the decision on review is not furnished within the time specified above, the
claim shall be deemed denied on review. The decision of the Committee upon
review will be final and binding on all parties.

8.8 Records

          All
acts and determinations of the Committee shall be duly recorded by the
secretary thereof and all such records, together with such other documents as
may be necessary in exercising its duties under the Plan shall be preserved in
the custody of such secretary. Such records and documents shall at all times be
open for inspection and for the purpose of making copies by any person
designated by the Corporation. The Committee shall provide such timely
information, resulting from the application of its responsibilities under the
Plan, as needed by the Trustee and the accountant engaged on behalf of the Plan
by the Corporation, for the effective discharge of their respective duties.

80

8.9 Missing Persons

          If
the Trustee is unable to make payment to any Participant or other person to
whom a payment is due under the Plan because it cannot ascertain the identity
or whereabouts of such Participant or other person after reasonable efforts
have been made to identify or locate such person (including a notice of the payment
so due mailed to the last known address of such Participant or other person as
shown on the records of the Employer), such payment and all subsequent payments
otherwise due to such Participant or other person shall be treated as forfeited
three (3) years after the date such payment first became due; provided,
however, that such payment and any subsequent payments shall be reinstated
retroactively no later than sixty (60) days after the date on which the
Participant or other person is identified or located.

81

ARTICLE IX
AMENDMENT AND TERMINATION OF THE PLAN

9.1 Amendment
of the Plan

          The
Chief Executive Officer, the President and the Vice President of Human
Resources, and any other officer of the Corporation who is authorized by the
Board of Directors, shall have the right at any time, with approval of the
Board, to amend the Plan in whole or in part, including retroactively to the
extent necessary. Notwithstanding the preceding sentence, (a) for amendments
effective prior to October 16, 2001, such Board approval shall not be required
for (i) any technical or clarifying amendment deemed necessary or appropriate
to facilitate the administration, management or interpretation of the Plan or
to conform the Plan thereto or to qualify and maintain the Plan as a plan
meeting the requirements of the Code or any other applicable law, or (ii) any
amendment adding or modifying an operational provision resulting from a
corporate transaction (e.g., service-related issues); and (b) for amendments
effective on or after October 16, 2001, such Board approval shall not be
required for (i) any amendment that does not increase the benefits under the
Plan or otherwise increase the Corporation’s costs with respect to the Plan, or
(ii) after December 31, 2006, the participation in the Plan as a participating
employer of any organization whether or not it is affiliated with the
Corporation. The duties, powers and liability of the Trustee hereunder shall
not be increased without its written consent. The amount of benefits which at the
later of the adoption or effective date of such amendment shall have accrued
for any Participant or Beneficiary hereunder shall not be adversely affected
thereby. No such amendment shall have the effect of revesting in the Employer
any part of the principal or income of the Fund. No amendment may eliminate or
reduce any early retirement benefit or subsidy that continues after retirement
or optional form of benefit. Unless expressly provided for in an amendment, it
shall not affect the rights and obligations of any Participant who terminated
employment prior to the effective date of the amendment.

9.2 Termination
of the Plan

          The
Corporation expects to continue the Plan indefinitely, but continuance is not
assumed as a contractual obligation and each Employer reserves the right at any
time by action of its board of directors to terminate the Plan as applicable to
itself. If an Employer terminates or 

82

partially
terminates the Plan or permanently discontinues its Contributions at any time,
each Participant affected thereby shall be then fully vested in his Individual
Account.

          In
the event of termination of the Plan by an Employer, the Committee shall value
the Fund as of the date of termination. That portion of the Fund applicable to
any Employer for which the Plan has not been terminated shall be unaffected.
The Individual Accounts of the Participants and Beneficiaries affected by the
termination, as determined by the Committee, shall continue to be administered
as a part of the Fund or distributed to such Participants or Beneficiaries
pursuant to Section 5.6 as the Committee, in its sole discretion, shall
determine. Any distributions upon plan termination of amounts attributable to
Employee Pre-Tax Contributions and amounts held in a Participant’s Prior Plan
Employer Qualified Sub-Account shall only be made to the extent permissible by
Code Section 401(k)(10).

83

ARTICLE X
PROVISIONS RELATIVE TO EMPLOYERS INCLUDED IN
PLAN

10.1 Method
of Participation

          Any
organization, whether or not it is affiliated with the Corporation, may, with
the consent of the Corporation, adopt the Plan. In order for an organization
that is not affiliated with the Corporation under Code Sections 414(b), (c),
(m) or (o) to adopt the Plan, appropriate action is required by the board of
directors (or other governing body) of such adopting organization and by a
duly-authorized officer of the Corporation. An affiliated organization shall
adopt the Plan pursuant to an authorized signature under Section 9.1 of the
Plan. Any unaffiliated organization which becomes a party to the Plan shall
thereafter promptly deliver to the Corporation hereof a certified copy of the
resolutions or other documents evidencing its adoption of the Plan and also a
written instrument showing the Corporation’s approval of such organization’s
becoming a party to the Plan. 

10.2 Withdrawal

          Any
one or more of the Employers included in the Plan may withdraw from the Plan at
any time by giving six months advance notice in writing to the Board and the
Committee (unless a shorter notice shall be agreed to by the Board) of its or
their intention to withdraw. Upon receipt of notice of any such withdrawal, the
Committee shall certify to the Trustee the equitable share of such withdrawing
Employer in the Fund (to be determined by the Committee).

          The
Trustee shall thereupon set aside from the Fund then held by it such securities
and other property as it shall, in its sole discretion, deem to be equal in
value to such equitable share. If the Plan is to be terminated with respect to
such Employer, the amount set aside shall be dealt with in accordance with the
provisions of Section 9.2. If the Plan is not to be terminated with respect to
such Employer, the Trustee shall pay such amount to such trustee as may be
designated by such withdrawing Employer, and such securities and other property
shall thereafter be held and invested as a separate trust of the Employer which
has so withdrawn, and shall be used and applied according to the terms of a new
agreement and declaration of trust between the Employer so withdrawing and the
trustee so designated.

          Neither
the segregation of the Fund assets upon the withdrawal of an Employer, nor the
execution of any new agreement and declaration of trust pursuant to any of the
provisions of this 

84

Section 10.2,
shall operate to permit any part of the corpus or income of the Fund to be used
for or diverted to purposes other than for the exclusive benefit of
Participants and Beneficiaries or to defray reasonable costs of administering
the Plan and Trust.

85

ARTICLE XI
TOP-HEAVY PROVISIONS

11.1 Determination
of Top-Heavy

          (a)
(1) The Plan will be considered a Top-Heavy Plan for any Plan Year if as of the
Determination Date (A) the value of the Individual Accounts of Participants who
are Key Employees as of such Determination Date exceeds 60% of the value of the
Individual Accounts of all Participants determined as of such Determination
Date, excluding former Key Employees (the “60% Test”) or (B) the Plan is part
of a Required Aggregation Group which is Top-Heavy. Notwithstanding the results
of the 60% Test, the Plan shall not be considered a Top-Heavy Plan for any Plan
Year in which the Plan is a part of a Required or Permissive Aggregation Group
which is not Top-Heavy.

                    (2)
For purposes of the 60% Test,

                              (A)
all distributions made from Individual Accounts within the one-year period
ending on the Determination Date (or, in the case of any distribution made for
any reason other than separation from service, death, or disability, within the
five-year period ending on the Determination Date) shall be taken into account;

                              (B)
if any Participant is a non-Key Employee with respect to the Plan for any Plan
Year, but such Participant was a Key Employee with respect to the Plan for any
prior Plan Year, the Individual Account of such Participant shall not be
considered; and

                              (C)
If a Participant has not performed any service for the Employer or any
Affiliate which maintains the Plan at any time during the one-year period
ending on the Determination Date, the Individual Account of such Participant
shall not be considered.

          (b)
Minimum Allocations: Notwithstanding Sections 4.3 and 4.4, for any Plan
Year during which the Plan is a Top-Heavy Plan, the rate of Employer Matching
Contributions and Discretionary Contributions for such Plan Year allocated to
the Individual Accounts of Participants who are non-Key Employees and who
remain employed by the Employer (or any Affiliate) at the end of the Plan Year
(regardless of any such Participant’s hours of service or level of compensation
during the Plan Year) shall be not less than the lesser of:

                    (1)
three percent (3%) of such non-Key Employee Participant’s Section 415
Compensation; or

86

                    (2)
the highest aggregate percentage of Section 415 Compensation at which Employer
Matching Contributions, Discretionary Contributions, and Employee Pre-Tax
Contributions are made (or required to be made) and allocated under Article IV
for any Key Employee for the Plan Year.

          If
a Participant is covered by more than one defined contribution plan on account
of his employment with the Employer and/or any Affiliate, the minimum
allocation required by this Section shall be determined by aggregating the
allocations under all such plans.

          (c)
Impact on Minimum Benefits where Employer Maintains Both Defined Benefit and
Defined Contribution Plans: If the Employer (or any Affiliate) maintains a
defined benefit plan in addition to this defined contribution plan, both of
which are Top-Heavy, then:

                    (1)
in the case of non-Key Employee Participants covered only by the defined
benefit plan, the minimum benefit under the defined benefit plan shall be
provided; and

                    (2)
in the case of non-Key Employee Participants not covered by the defined benefit
plan or covered by both plans, a minimum allocation of five percent (5%) of
such non-Key Employee Participant’s Section 415 Compensation shall be provided.
If a Participant is covered by more than one defined contribution plan on
account of his employment with the Employer and/or any Affiliate, the minimum
allocation required by this Section shall be determined by aggregating the
allocations under all such defined contribution plans.

11.2 Top-Heavy
Definitions

          Determination
Date – With respect to any Plan Year, the last day of the preceding Plan
Year.

          Key
Employee – Any Employee or former Employee who at any time during the Plan
Year containing the Determination Date is or was (1) an officer of the Employer
having annual Section 415 Compensation for such Plan Year which is in excess of
$130,000 (as adjusted pursuant to Code Section 416(i)(1)(A)) (but in no event
shall the number of officers taken into account as Key Employees exceed the
lesser of (A) 50 or (B) the greater of 3 or 10% of all employees); (2) a
five-percent owner of the Employer; or (3) a one-percent owner of the Employer
who has annual Section 415 Compensation of more than $150,000. For purposes of
determining five-percent and one-percent owners, neither the aggregation rules
nor the rules of subsections (b), (c) and (m) of Code Section 414 apply.
Beneficiaries of an Employee acquire the character of the Employee who
performed services for the Employer. Also, inherited benefits 

87

will retain
the character of the benefits of the Employee who performed services for the
Employer. A non-Key Employee is any Employee who is not a Key Employee, or who
is a former Key Employee.

          Permissive
Aggregation Group – Each employee pension benefit plan maintained by the
Employer (or any Affiliate) which is considered part of the Required
Aggregation Group, plus one or more other employee pension benefit plans
maintained by the Employer (or any Affiliate) that are not part of the Required
Aggregation Group but that satisfy the requirements of Section 401(a)(4) and
Section 410 of the Code when considered together with the Required Aggregation
Group.

          Required
Aggregation Group – Each employee pension benefit plan maintained by the
Employer (or any Affiliate), whether or not terminated, in which a Key Employee
participates in the Plan Year containing the Determination Date or any of the
four preceding Plan Years, and each other employee pension benefit plan
maintained by the Employer (or any Affiliate), whether or not terminated, in
which no Key Employee participates but which during the same period enables any
employee pension benefit plan in which a Key Employee participates to meet the
requirements of Code Section 401(a)(4) or 410.

88

ARTICLE XII
MISCELLANEOUS

12.1 Governing
Law

          The
Plan shall be construed, regulated and administered according to the laws of
the state of New Jersey, except in those areas preempted by the laws of the
United States of America.

12.2 Construction

          The
headings and subheadings in the Plan have been inserted for convenience of
reference only and shall not affect the construction of the provisions hereof.
In any necessary construction, the masculine shall include the feminine and the
singular the plural, and vice versa.

12.3 Administration
Expenses

          The
expenses of administering the Fund and the Plan may be paid either by the
Employer or from the Fund, as directed by the Corporation.

12.4 Participant’s
Rights; Acquittance

          No
Participant in the Plan shall acquire any right to be retained in the Employer’s
employ by virtue of the Plan, nor, upon his dismissal, or upon his voluntary
termination of employment, shall he have any right or interest in and to the
Fund other than as specifically provided herein. The Employer shall not be
liable for the payment of any benefit provided for herein. All benefits
hereunder shall be payable only from the Fund.

12.5 Spendthrift
Clause

          Except
as provided by a qualified domestic relations order within the meaning of ERISA
Section 206(d)(3) and, except pursuant to certain judgments and settlements
under ERISA Section 206(d)(4), none of the benefits, payments, proceeds, or
distributions under this Plan shall be subject to the claim of any creditor of
a Participant or a Beneficiary hereunder or to any legal process by any
creditor of a Participant or Beneficiary. Neither a Participant nor Beneficiary
shall have any right to alienate, commute, anticipate, or assign any of the
benefits, payments, proceeds or distributions under this Plan.

12.6 Merger,
Consolidation or Transfer

          In
the event of the merger or consolidation of the Plan with another plan or
transfer of assets or liabilities from the Plan to another plan, each then
Participant or Beneficiary shall not, as a result of such event, be entitled on
the day following such merger, consolidation or transfer 

89

under the
termination of the Plan provisions to a lesser benefit than the benefit he was
entitled to on the day prior to the merger, consolidation or transfer if the
Plan had then terminated.

          The
Trustee possesses the specific authority to enter into merger agreements or
direct transfer of asset agreements with the trustees of other retirement plans
described in Code Section 401(a), including any elective transfer, and to accept
the direct transfer of plan assets, or to transfer plan assets, as a party to
any such agreement, upon written direction of the Committee.

12.7 Mistake
of Fact

          Notwithstanding
anything herein to the contrary, upon the Employer’s request, a Contribution
which was made by a mistake of fact, or conditioned upon initial qualification
of the Plan or upon the deductibility of the Contribution under Code Section
404, may be returned to the Employer by the Trustee within one (1) year after
the payment of the Contribution, the denial of the qualification or the
disallowance of the deduction (to the extent disallowed), whichever is later.
For purposes of the preceding sentence, all contributions to the Plan made
before receipt of a favorable determination letter on qualification from the
Internal Revenue Service shall be conditioned on the Plan’s initial
qualification, and all contributions, whenever made, shall be conditioned on
their deductibility under Code Section 404. 

12.8 Counterparts

          The
Plan and the Trust Agreement may be executed in any number of counterparts,
each of which shall constitute but one and the same instrument and may be
sufficiently evidenced by any one counterpart.

12.9 Transitional
Rule

          Notwithstanding
any provision in this Plan to the contrary, no contribution by or on behalf of
any Participant shall be made under this Plan for any period during which any
contribution by or on behalf of such Participant is made while such Participant
is a participant in a Merged Plan.

90

ARTICLE XIII
ADOPTION OF THE PLAN

          Anything
herein to the contrary notwithstanding, this amended and restated Plan is
adopted and maintained under the condition that it is qualified by the Internal
Revenue Service under Code Section 401(a) and that the Trust hereunder is
exempt under Code Section 501(a).

          As
evidence of its adoption of the Plan, Quest Diagnostics Incorporated (DE) has
caused this instrument to be signed by its authorized officer this ___ day of
__________, ______, effective as of January 1, 2007, except as otherwise
provided herein.

	
 

	
 

	
 

	
 

	
 

	
ATTEST:

	
 

	
QUEST
 DIAGNOSTICS INCORPORATED (DE)

	
 

	
 

	
 

	
 

	
 

	
 

	
 

	
 

	
By:

	
 

	
 (SEAL)

	

	
 

	
 

	

	
 

	
 

	
 

	
(Title)

	
 

91

Appendix
A

The Effective Date for each Employer is set forth
below:

	
 

	
 

	
Employer 

	
Effective
Date 

	

	

	
Quest Diagnostics
  Incorporated (DE)

	
October
  1, 1973

	
Quest Diagnostics
  Incorporated (MI)

	
May
  1, 1990

	
Quest Diagnostics LLC (CT)

	
January
  1, 1994

	
Quest Diagnostics of
  Pennsylvania Inc. (DE)

	
July
  1, 1993

	
MetWest Inc. dba Quest
  Diagnostics

	
April
  1, 1994

	
Quest Diagnostics LLC (MA)

	
March
  1, 1995

	
Quest Diagnostics
  Incorporated (MD)

	
January
  1, 1995

	
Nichols Institute
  Diagnostics (CA)

	
January
  1, 1995

	
Quest Diagnostics
  Incorporated (CA)

	
January
  1, 1995

	
Quest Diagnostics LLC (IL)

	
January
  1, 1999

	
Quest Diagnostics Clinical
  Laboratories, Inc. (DE) (f/k/a
 SmithKline Beecham Clinical Laboratories,
  Inc.)

	
August
  16, 1999

	
MedPlus, Inc.

	
January
  1, 2002

	
Quest
  Diagnostics Venture LLC (PA)

	
November
  15, 1997

	
Diagnostic Laboratory of
  Oklahoma

	
January
  13, 2001

	
Quest Diagnostics Nichols
  Institute Inc.

	
January
  1, 2003

	
Quest Diagnostics
  Incorporated (NV)

	
January
  1, 2003

	
Associated Pathologists,
  Chartered

	
January
  1, 2003

	
Associated Diagnostic
  Pathologists, Inc.

	
January
  1, 2007

	
LabOne, Inc.

	
January
  1, 2007

92

Appendix
B

The Merger Date for each Merged Plan is set forth
below:

	
 

	
 

	
Name 

	
Merger Date 

	

	

	
Advance Medical & Research Center, Inc.
  Retirement Plan

	
May 1, 1990

	
Continental Bio Clinical Laboratory Service, Inc.
  Profit Sharing and Retirement Savings Plan

	
January 1, 1992

	
Statlab, Inc. Retirement Plan

	
March 1, 1993

	
CPF/MetPath Savings and Retirement Plan

	
July 1, 1993

	
Clinical Pathology Facility, Inc. Pension Plan

	
July 1, 1993

	
DeYor Laboratories 401(k) Profit Sharing Plan and
  Trust

	
January 1, 1994

	
The Profit Sharing Plan and Trust Agreement for
  Employees of MetWest Inc.

	
April 1, 1994

	
Maryland Medical Laboratory, Inc. 401(k) Profit
  Sharing Plan and Trust

	
January 1, 1995

	
Nichols Institute 401(k) Plan

	
January 1, 1995

	
Podiatric Pathology Laboratories, Inc. Profit
  Sharing Plan

	
January 1, 1995

	
MedPlus, Inc. 401(k) Plan

	
January 2, 2002

	
LabPortal, Inc. 401(k) Plan

	
July 1, 2002

	
AML-East 401(k) Plan

	
January 3, 2003

	
APL Healthcare Group Inc. Profit Sharing and 401(k)
  Plan

	
January 3, 2003

	
Clinical Diagnostics Services 401(k) Plan

	
June 2, 2003

	
Unilab 401(k) Plan

	
January 2, 2004

	
LabOne, Inc. Profit Sharing 401(k) Plan

	
March 1, 2007

	
LabOne, Inc. Money Purchase Pension Plan

	
March 1, 2007

          There
are several different Merger Dates for Participants who were former
participants in the Damon Plan, depending on the Damon Corporation entity with
which such former participant was employed before transferring to an Employer:

93

	
 

	
 

	
Name of Entity 

	
Merger Date 

	

	

	
American Health Resources, Inc.

	
January 1, 1994

	
Damon Clinical Laboratories, Inc. (FL)

	
January 1, 1994

	
Damon Clinical Laboratories, Inc. (MA) – Connecticut
  locations

	
January 1, 1994

	
Damon Clinical Laboratories, Inc. (PA)

	
January 1, 1994

	
Damon Clinical Laboratories, Inc. (TX) – Kansas and
  Missouri locations

	
January 1, 1994

	
Damon Corporation

	
January 1, 1994

	
Health Care Laboratories, Inc.

	
January 1, 1994

	
Damon Clinical Laboratories, an Illinois general
  partnership

	
March 1, 1994

	
Damon Clinical Laboratories, Inc. (AZ)*

	
April 1, 1994

	
Damon Clinical Laboratories, Inc. (TX) – All
  locations other than Kansas and Missouri*

	
April 1, 1994

	
Damon Clinical Laboratories – Houston, Inc.*

	
April 1, 1994

	
New York Damon Clinical Laboratories, Inc.

	
April 1, 1994

	
Damon Clinical Laboratories, Inc. (MA) – All
  locations other than Connecticut**

	
May 1, 1994

	
Damon Clinical Laboratories – Pittsburgh, Inc.

	
June 1, 1994

	
 

	
 

	
  *

	
As of January 1, 1994,
  individuals who had been employed with these entities became employees of
  MetWest Inc., but continued to participate in the Damon Plan through March
  31, 1994.

	
 

	
 

	
**

	
As of January 1, 1994,
  individuals who had been employed with this entity became employees of
  MetPath New England Inc., but continued to participate in the Damon Plan
  through April 30, 1994.

94

Appendix
C

          All
distributions under the Plan made on or after January 2, 2001 and prior to
March 1, 2002 shall be based upon the value of the Participant’s
Individual Account as determined under the provisions of this Appendix C. 

          (a) 
The value of a Participant’s Individual Account upon a distribution hereunder
shall be the sum of paragraphs (1)-(12) below, where:

                    (1)
is the product of (A) the closing Net Asset Value of the Fidelity Contrafund on
the Valuation Date, and (B) the number of shares of such fund allocated to the
Participant’s Individual Account as of such Valuation Date;

                    (2)
is the product of (A) the closing Net Asset Value of the Fidelity Diversified
International Fund on the Valuation Date, and (B) the number of shares of such
fund allocated to the Participant’s Individual Account as of such Valuation
Date.

                    (3)
is the product of (A) the closing Net Asset Value of the Fidelity Equity-Income
Fund on the Valuation Date, and (B) the number of shares of such fund allocated
to the Participant’s Individual Account as of such Valuation Date;

                    (4)
is the product of (A) the closing Net Asset Value of the Fidelity
Growth & Income Portfolio on the Valuation Date, and (B) the number of
shares of such fund allocated to the Participant’s Individual Account as of
such Valuation Date;

                    (5)
is the product of (A) the closing Net Asset Value of the Fidelity Low Priced
Stock Fund on the Valuation Date, and (B) the number of shares of such fund
allocated to the Participant’s Individual Account as of such Valuation Date;

                    (6)
is the product of (A) the closing Net Asset Value of the Fidelity Magellan Fund
on the Valuation Date, and (B) the number of shares of such fund allocated to
the Participant’s Individual Account as of such Valuation Date;

                    (7)
is the product of (A) the closing Net Asset Value of the Fidelity OTC Portfolio
on the Valuation Date, and (B) the number of shares of such fund allocated to
the Participant’s Individual Account of such Valuation Date;

                    (8)
is the product of (A) the closing Net Asset Value of the Fidelity Puritan Fund
on the Valuation Date, and (B) the number of shares of such fund allocated to
the Participant’s Individual Account as of such Valuation Date; 

95

                    (9)
is the product of (A) the closing Net Asset Value of the Fidelity Spartan U.S.
Equity Index Fund on the Valuation Date, and (B) the number of shares of such
fund allocated to the Participant’s Individual Account as of such Valuation
Date; 

                    (10)
is the product of (A) the closing Net Asset Value of the Fidelity U.S. Bond
Index Fund on the Valuation Date, and (B) the number of shares of such fund
allocated to the Participant’s Individual Account as of such Valuation Date; 

                    (11)
is the number of shares of the Managed Income Portfolio allocated to the
Participant’s Individual Account as of such Valuation Date; and

                    (12)
is the product of (A) the per unit value of the Employer Stock Fund, the
Corning Stock Fund and the Covance Stock Fund on the Valuation Date, and (B) number
of units of such fund allocated to the Participant’s Individual Account as of
such Valuation Date.

96-- Converted by SEC Publisher, created by BCL Technologies Inc., for SEC Filing

Exhibit 10.40
  

CONFIDENTIAL

Letter of Agreement between

SmithKline Beecham Corporation

  And 

Quest Diagnostics Incorporated 

This Letter of Agreement (“LOA”), effective as of January 1, 2008, is made between SmithKline Beecham Corporation d/b/a GlaxoSmithKline with a primary address at 2301 Renaissance Blvd, King of Prussia, PA
19406 USA, together with its affiliates (“GlaxoSmithKline” or “GSK”) and Quest Diagnostics Incorporated, with a primary address at 3 Giralda
Farms, Madison, NJ 07940 together with its affiliates (“Quest Diagnostics”) together “the Parties”, to revise the relationship previously established in the Amended and Restated Global Clinical Trials Agreement dated December 19,
2002 (hereinafter “Previous Agreement”). “Affiliates” for purposes of this LOA shall include any corporation or non-corporate entity which controls, is controlled by, or is under common control with a Party to this LOA.

1.      The Parties agree that Quest Diagnostics shall continue to provide services (hereinafter “Services” as defined in the Previous Agreement) in accordance with the terms of the Previous Agreement and as
supplemented by the new business terms covered in Exhibit A, attached hereto, while the Parties, in good faith, draft and negotiate a comprehensive new Global Clinical Trials Agreement (“Agreement”).

2.      This LOA is not intended to take the place of the Agreement, but to implement the business terms contained on Exhibit A while the
Agreement is negotiated and executed. This LOA shall remain in effect until the earlier of (i) the execution of the Agreement by the Parties or (ii) March 31, 2008, which date may be extended by the mutual agreement of the Parties. Upon its full
execution, the Agreement shall supersede this LOA and the Previous Agreement. 

3.      During the term of this LOA, should any dispute arise between the Parties involving conflict or interpretation of a term or condition of the Previous Agreement and a term or condition of this LOA, the disputing
party shall promptly notify the other party of the disputed term and the Parties shall negotiate in good faith to resolve the dispute. Notice of the dispute shall be in writing to the following individuals: 

	For Quest Diagnostics:

Daniel P. Megronigle

3 Giralda Farms 

  Madison, NJ 07940 

  Phone 973-520-2086

		For GlaxoSmithKline:

Paula M. Russella

2301 Renaissance Blvd., #510, RN0410

King of Prussia, PA 19406

Phone: 610-787-3281

	

 

	 
	 
	 

	SMITHKLINE BEECHAM CORPORATION
	 
	QUEST DIAGNOSTICS INCORPORATED

	 
	 
	 

	By:
	 
	By:

	
    	 
	
    
	 
	 
	 

	Name Printed:
	 
	Name Printed: 

	
    	 
	
    
	 
	 
	 

	Title:
	 
	Title: 

	
    	 
	
    
	 
	 
	 

	Date: 
	 
	Date:

	
    	 
	
    
	 	 	 
	Letter of Agreement	 	 
	GlaxoSmithKline and Quest Diagnostics
    Incorporated 	 	 
	 	 	 

Page 1 of 11

EXHIBIT A

	
I.      		
Term of Agreement
	
	 
	 	
It is agreed by the Parties that the Agreement shall be effective January 1, 2008 and shall continue through December 31, 2014.

	
	 
	
II.      		
Compensation
	
	 
	 	
The Parties agree that the “Most Favored Nations (MFN”) pricing status provisions [established under Section XV(1) and XV(1)(i)] from the Previous Agreement shall be of no further force or
effect as of January 1, 2008. Any references to the MFN status shall be void.

	
	 
	 	
Further, Section # XV of the Previous Agreement shall be of no further force or effect for any studies contracted after December 31, 2007. However, items #4 through #15 of Section XV of the Previous
Agreement shall continue to apply to any studies contracted before December 31, 2007.

	
	 
	 	
1.      Billing
      and Payment Terms. Quest Diagnostics will provide a proposal to GlaxoSmithKline based on the Fee Schedule attached hereto as Attachment #1. Quest Diagnostics will bill GlaxoSmithKline for Services once per month. Charges will be billed at the rates agreed to in the applicable Task
Description, subject to any adjustments for inflation and exchange rates permitted under the Task Description or this LOA. Laboratory testing services requested by GlaxoSmithKline that are not included in Attachment #1 shall be billed at Quest
Diagnostics’ then-current general fee schedule, subject to any applicable discounts (*) from Quest Diagnostics current list prices, unless otherwise agreed in writing by the Parties. It is a MATERIAL TERM of this Agreement that GlaxoSmithKline
shall pay all undisputed invoiced amounts within thirty (30) days of receipt of an invoice for Services.

	
	 
	 	
2.      		
Payments:
	
	 
	 	 	
2.1       US payments shall be made by wire transfer or check payable to Quest Diagnostics Incorporated, Tax ID Number 38-2084239:

	
	 

	 
	 

	If
            payment by check:
	 	If
            payment is by Bank Transfer/Wire Transfer:
	 
	
	Quest Diagnostics Incorporated
	Send to: Bank of America

	Clinical Trials USA
	ABA Routing Number: 

	13747 Collection Center
          Drive
	Account Number: 

	Chicago, IL 60693
	Swift Number 

	 
	Telex Number: 

	 
	*Please identify the
          invoice numbers being paid.

	 	2.2 	UK payments shall be made
      in the currency agreed to by the parties by check or bank transfer (check
    payable to Quest
	    		
 
		 Diagnostics
    Limited, VAT Registration Number GB 731 5475 39):
	 

Letter of Agreement

GlaxoSmithKline and Quest Diagnostics Incorporated 

____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 2 of 11

	
            If payment is by Cheque: 
	 		
            If
    payment is by Bank Transfer: 

	 	
	
Non US Dollar currencies:		 		
HSBC Bank		 	
	
Quest Diagnostics Ltd		 		
City of London Corporate Office	
	
Unit B-1 – Parkway West		 		
8 Canada Square, London	
	
Cranford Lane		 		
E14 5XL, United Kingdom	
	
Heston Middlesex		 		 		 	
	
England TW5 9QA		 		
Swift Code:		 	
	 	
	
US Dollars:		 		
Non US Dollar and Non Euro Deposits:	
	
Quest Diagnostics Limited		 		
            Account: Quest Diagnostics Limited	
	
PO Box 13318		 		
            Sort Code:		
      Number: 

	
Newark		 		
            IBAN#		 	
	
NJ 07101-3318		 		 		 	
	
USA		 		
Euro Deposits:		 	
	 		 		
            Account: Quest Diagnostics Limited	
	 		 		
            Sort Code:		
      Number: 

	 		 		
            IBAN#		 	
	 	
	 		 		
US Dollar Deposits:	
	 		 		
            Account: Quest Diagnostics Limited	
	 		 		
            Sort Code:		
      Number: 

	 		 		
            IBAN#		 	

3. Fee Increases. Quest Diagnostics may increase fees for its Services provided hereunder * to offset any increased costs of operations by providing written notice to
GlaxoSmithKline. 

Any such increase shall not exceed *.       .

4. *. The * is designed to provide GlaxoSmithKline with * in *. The * shall apply to all studies contracted by the Parties as of *. Quest Diagnostics will offer a * to
current studies . This * will apply to * and excludes * by Quest Diagnostics Laboratory or any of its affiliates. The * shall be applied as a * on each invoice for testing services rendered during the preceding month. 

5. *. GlaxoSmithKline shall earn * of * following adjustment for *. The * shall exclude *.

The * is as follows:

	
*		
*	
	
*		
*	
	
*		
*	

The * shall be payable by March 31 of the following calendar year. 

The * will continue through the term of the Agreement, although the Parties will negotiate in good faith * to adjust the * for calendar years *. Until the parties reach such agreement, the * shall apply.

6. *:
    A total of * is available to apply against * for the period *, reduced by
any * earned in *, provided the following criteria are met:

Letter of Agreement

GlaxoSmithKline and Quest Diagnostics Incorporated 

____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 3 of 11

• In
any single calendar year (between * and *) if the * (*) is above *,
GSK can apply * of the * as defined above as a * by March 31 of the following
calendar year.

 The* of * in aggregate will be
reduced by the total amount of * earned by GSK in  *.
e.g. If the * amounts to * in * and * in *, the total * available for the period will
be * in aggregate *. 

III. Exclusivity Clause

The Parties agree that the Exclusivity Clause [Section III(1)-(4)] and the Exclusivity Audits [section XVI(3)] of the Previous Agreement shall be of no further force or effect. As of the Effective Date, Quest
Diagnostics shall be a “Principal Provider” of global central laboratory services for GSK. As Principal Provider, Quest Diagnostics shall support all of GSK’s annual global central laboratory needs and shall be awarded all laboratory
testing in connection with *, with the exception of GSK clinical studies in the following specific areas: 

*

However, as a Principal Provider GlaxoSmithKline shall provide Quest Diagnostics *, and GSK shall have the absolute right to *.

	
If * cause the * to fall below *, Quest Diagnostics reserves the right to *.

	
* applies only to new studies that have not already been * by Quest Diagnostics.

IV. Miscellaneous. The following are some of the additional terms discussed by the Parties that will be further negotiated for inclusion in the Agreement. Other terms may
also be included by agreement of the Parties:

 a) Relationship
Management:

     (i)
      Relationship Metrics. In addition to Operational
  Metrics, Quest Diagnostics and GSK will mutually agree
  to a Scorecard of Relationship Metrics inclusive of financial, development
  economics and operational satisfaction measures. Attachment #2 hereto contains
  Potential Key Performance Metrics. The Parties shall mutually agree to a maximum
  of 12 metrics from this list as well as agree to the frequency of the metrics. 

     (ii) Steering
Committee. In support of the Strategic
relationship between the Parties a Business Steering Committee shall be established
to  foster best practices, creative alternatives and forward thinking. This committee
will be charged with and responsible for the periodic review of all aspects of
the Strategic Relationship to ensure business goals and objectives are  achieved.

b) Quest
Diagnostics Strategic Investments: 

            Quest Diagnostics is in the planning phases of
* into a * which will be targeted to open in the *. 

                 • Quest
Diagnostics is willing to establish a joint team with GSK to identify and review
mutually beneficial collaboration opportunities to drive  growth. 

Letter of Agreement

GlaxoSmithKline and Quest Diagnostics Incorporated 

____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 4 of 11

     • Quest Diagnostics will establish a new laboratory facility in India no later than the second quarter of 2008 to begin to support GSK off-shore
operations. 

     • Quest Diagnostics will enhance the quality of its Information Technology and sample management services pursuant to Quest Diagnostics’
June 4, 2007 proposal. 

Quest Diagnostics will restructure its existing * through key performance indicators agreed upon with GSK, including * and improvements to process flow and communications. 

 

 

Letter of Agreement

GlaxoSmithKline and Quest Diagnostics Incorporated 

____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 5 of 11

Attachment #1 

2008 Fee Schedule 

	 	Proposed RoW
	
	Proposed Americas

	Test
	 
	 
	 
	 	 
	 
	 

	
11-DEHYDROTHROMBOXANE-B2  	* 	 	
*  	 	* 	       	
*  
	
ACTH, PLASMA      	* 	 	
*  	 	* 	       	
*  
	
ADIPONECTIN       	* 	 	
*  	 	* 	       	
*  
	
ALBUMIN CREATININE RATIO  	* 	 	
*  	 	* 	       	
*  
	
ALCOHOL (ETHYL), URINE    	* 	 	
*  	 	* 	       	
*  
	
ALDOLASE  	* 	 	
*  	 	* 	       	
*  
	
ALPHA-1-ACID GLYCOPROTEIN 	* 	 	
*  	 	* 	       	
*  
	
AMMONIA, PLASMA   	* 	 	
*  	 	* 	       	
*  
	
AMYLASE, SERUM    	* 	 	
*  	 	* 	       	
*  
	
ANA TITER & PATTERN   	* 	 	
*  	 	* 	       	
*  
	
APOLIPOPROTEIN A1 	* 	 	
*  	 	* 	       	
*  
	
APOLIPOPROTEIN B  	* 	 	
*  	 	* 	       	
*  
	
APOLIPOPROTEIN C3 	* 	 	
*  	 	* 	       	
*  
	
APPT/PROTHROMBIN TIME WITH INR    	* 	 	
*  	 	* 	       	
*  
	
BETA-2 MICROGLOBULIN      	* 	 	
*  	 	* 	       	
*  
	
BONE ALKALINE PHOSOPHATASE        	* 	 	
*  	 	* 	       	
*  
	
BRAIN NATRIURETIC PEPTIDE 	* 	 	
*  	 	* 	       	
*  
	
CA 19-9   	* 	 	
*  	 	* 	       	
*  
	
CARDIO CRP        	* 	 	
*  	 	* 	       	
*  
	
CD40L, SOLUBLE    	* 	 	
*  	 	* 	       	
*  
	
CHEMISTRY ANALYTE 	* 	 	
*  	 	* 	       	
*  
	
CHEMISTRY PANEL   	* 	 	
*  	 	* 	       	
*  
	
CHEMZYME PLUS     	* 	 	
*  	 	* 	       	
*  
	
CHLAMYDIA TRACHOMATIS PCR 	* 	 	
*  	 	* 	       	
*  
	
CHORIONIC GONADOTROPIN, QUALITATIVE       	* 	 	
*  	 	* 	       	
*  
	
CK-MB     	* 	 	
*  	 	* 	       	
*  
	
CMV IGM ANTIBODY  	* 	 	
*  	 	* 	       	
*  
	
COMPLEMENT COMPONENT C3   	* 	 	
*  	 	* 	       	
*  
	
COMPLEMENT COMPONENT C4   	* 	 	
*  	 	* 	       	
*  
	
COMPLETE BLOOD COUNT      	* 	 	
*  	 	* 	       	
*  
	
CORTISOL, SERUM (immunoassay)     	* 	 	
*  	 	* 	       	
*  
	
CORTISOL,FREE, 24HR URINE (immunoassay)   	* 	 	
*  	 	* 	       	
*  
	
C-PEPTIDE 	* 	 	
*  	 	* 	       	
*  
	
C-REACTIVE PROTEIN        	* 	 	
*  	 	* 	       	
*  
	
CREATININE        	* 	 	
*  	 	* 	       	
*  
	
CREATININE CLEARANCE      	* 	 	
*  	 	* 	       	
*  
	
CREATININE, RANDOM URINE  	* 	 	
*  	 	* 	       	
*  
	
CREATININE, URINE 	* 	 	
*  	 	* 	       	
*  
	
CYSTATIN C, SERUM 	* 	 	
*  	 	*
               	       	
*  

Letter of Agreement 

GlaxoSmithKline and Quest Diagnostics Incorporated 

____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 6 of 11 

	 	Proposed
            RoW
	
	Proposed
            Americas

	   	* 	     	
*  	     	
      * 
	     	
*  
	 	 	 	 	 	 	 	 
	
Test       	 	     	   	     	 
	     	   
	
DERMATAN SULFATE  	* 	     	
*  	     	
      * 
	     	
*  
	
DIGOXIN   	* 	     	
*  	     	
      * 
	     	
*  
	
DIHYDROTESTOSTERONE       	* 	     	
*  	     	
      * 
	     	
*  
	
DNA (DS) ANTIBODIES       	* 	     	
*  	     	
      * 
	     	
*  
	
DNA EXTRACTION/AUTOPREP   	* 	     	
*  	     	
      * 
	     	
*  
	
DRUG ABUSE W/ALCOHOL      	* 	     	
*  	     	
      * 
	     	
*  
	
EGFR, ELISA       	* 	     	
*  	     	
      * 
	     	
*  
	
ESTRADIOL 	* 	     	
*  	     	
      * 
	     	
*  
	
FATTY ACIDS, FREE 	* 	     	
*  	     	
      * 
	     	
*  
	
FERRITIN  	* 	     	
*  	     	
      * 
	     	
*  
	
FIBRINOGEN        	* 	     	
*  	     	
      * 
	     	
*  
	
FOLATE, SERUM     	* 	     	
*  	     	
      * 
	     	
*  
	
FREE KAPPA & LAMBDA LIGHT CHAINS      	* 	     	
*  	     	
      * 
	     	
*  
	
FRUCTOSAMINE      	* 	     	
*  	     	
      * 
	     	
*  
	
FSH       	* 	     	
*  	     	
      * 
	     	
*  
	
GAD ANTIBODIES    	* 	     	
*  	     	
      * 
	     	
*  
	
GLUCOSE, PLASMA   	* 	     	
*  	     	
      * 
	     	
*  
	
GLUCOSE, URINE RANDOM     	* 	     	
*  	     	
      * 
	     	
*  
	
H. PYLORI ANTIBODY (IGG)  	* 	     	
*  	     	
      * 
	     	
*  
	
H. PYLORI ANTIBODY (IGM)  	* 	     	
*  	     	
      * 
	     	
*  
	
HAPTOGLOBIN       	* 	     	
*  	     	
      * 
	     	
*  
	
HCV RNA QUANT, PCR        	* 	     	
*  	     	
      * 
	     	
*  
	
HDL CHOLESTEROL   	* 	     	
*  	     	
      * 
	     	
*  
	
HDL SUBCLASSES    	* 	     	
*  	     	
      * 
	     	
*  
	
HELICOBACTER PYLORI ANTIBODY (IGA)        	* 	     	
*  	     	
      * 
	     	
*  
	
HEMATOCRIT        	* 	     	
*  	     	
      * 
	     	
*  
	
HEMOGLOBIN        	* 	     	
*  	     	
      * 
	     	
*  
	
HEMOGLOBIN A1C    	* 	     	
*  	     	
      * 
	     	
*  
	
HEMOGRAM  	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS A AB TOTAL      	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS A IGM ANTIBODY  	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS B CORE AB       	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS B CORE IGM      	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS B SURFACE AB    	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS B SURFACE ANTIGEN W/    	* 	     	
*  	     	
      * 
	     	
*  
	
CONFIRMATION      	 	     	   	     	 
	     	   
	
HEPATITIS BE AB   	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS BE AG   	* 	     	
*  	     	
      * 
	     	
*  
	
HEPATITIS C ANTIBODY      	* 	     	
*  	     	
      * 
	     	
*  
	
HER2, ELISA       	* 	     	
*  	     	
      * 
	     	
*  
	
HER-2/NEU FISH    	* 	     	
*  	     	
      * 
	     	
*  
	
HETEROPHILE, MONO SCREEN  	* 	     	
*  	     	
      * 
	     	
*  
	
HIV-1 AB WESTERN BLT      	* 	     	
*  	     	
      * 
	     	
*  
	
HIV-1 RNA 1.5 ULTRA       	* 	     	
*  	     	
      * 
	     	
*  

Letter of Agreement

GlaxoSmithKline and Quest Diagnostics Incorporated 

____________________________________

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 7 of 11 

	 	Proposed
            RoW
	
	Proposed
            Americas

	     	
*  	    	
*  	 	* 	    	
*  
	
Test       	    	       	    	 	 	       	    
	 	 	 	 	 	 	 	 
	
HIV-1 RNA BY PCR (1.5) QUANT      	
*  	       	
*  	 	* 	       	
*  
	
HIV-1/HIV-2 AB SCREEN     	
*  	       	
*  	 	* 	       	
*  
	
HIV-2 ANTIBODY WB 	
*  	       	
*  	 	* 	       	
*  
	
HPV DNA (HIGH RISK)       	
*  	       	
*  	 	* 	       	
*  
	
HTLV I/II ANTIBODY        	
*  	       	
*  	 	* 	       	
*  
	
IGE, SERUM        	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOFIXATION, SERUM     	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOFIXATION, URINE     	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOGLOBULIN A  	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOGLOBULIN AP 	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOGLOBULIN G  	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOGLOBULIN M  	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOGLOBULIN Mp 	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOGLOBULIN SERUM      	
*  	       	
*  	 	* 	       	
*  
	
IMMUNOREACTIVE INSULIN (LINCO RIA)        	
*  	       	
*  	 	* 	       	
*  
	
INSULIN (IMMULITE)        	
*  	       	
*  	 	* 	       	
*  
	
INTERLEUKIN-6 HIGHLY SENSITIVE    	
*  	       	
*  	 	* 	       	
*  
	
IRON, TOTAL, IBC & SATURATION 	
*  	       	
*  	 	* 	       	
*  
	
LACTATE DEHYDROGENASE ISOENZYMES  	
*  	       	
*  	 	* 	       	
*  
	
LDL Calculation   	
*  	       	
*  	 	* 	       	
*  
	
LIPASE SERUM (when ordered with a Chem panel)     	
*  	       	
*  	 	* 	       	
*  
	
LIPID PANEL       	
*  	       	
*  	 	* 	       	
*  
	
LIPID PANEL (BETA QUANT)  	
*  	       	
*  	 	* 	       	
*  
	
LIPOPROTEIN (A)   	
*  	       	
*  	 	* 	       	
*  
	
LITHIUM   	
*  	       	
*  	 	* 	       	
*  
	
Lp-PLA2 ACTIVITY, COLORIMETRIC - GSK ONLY 	
*  	       	
*  	 	* 	       	
*  
	
LUTEINIZING HORMONE       	
*  	       	
*  	 	* 	       	
*  
	
LYMPHOCYTE SUBSET PANEL 2 (CD4/CD8)       	
*  	       	
*  	 	* 	       	
*  
	
LYMPHOCYTE SUBSET PANEL 3 	
*  	       	
*  	 	* 	       	
*  
	
MICROALBUMIN, RANDOM URINE        	
*  	       	
*  	 	* 	       	
*  
	
MMP-9 EIA (TOTAL) 	
*  	       	
*  	 	* 	       	
*  
	
MULTISPOT HIV 1/2 	
*  	       	
*  	 	* 	       	
*  
	
NEISSERIA GONORRHOEAE PCR 	
*  	       	
*  	 	* 	       	
*  
	
N-TELOPEPTIDE (U) 	
*  	       	
*  	 	* 	       	
*  
	
PAP, LIQUID-BASED 	
*  	       	
*  	 	* 	       	
*  
	
PARATHYROID HORMONE       	
*  	       	
*  	 	* 	       	
*  
	
PARTIAL THROMBOPLASTIN TIME, ACTIVATED    	
*  	       	
*  	 	* 	       	
*  
	
PEPSINOGEN I      	
*  	       	
*  	 	* 	       	
*  
	
PHENYTOIN 	
*  	       	
*  	 	* 	       	
*  
	
POTASSIUM, URINE  	
*  	       	
*  	 	* 	       	
*  
	
PROGESTERONE      	
*  	       	
*  	 	* 	       	
*  
	
PROINSULIN        	
*  	       	
*  	 	* 	       	
*  
	
PROLACTIN 	
*  	       	
*  	 	* 	       	
*  

GlaxoSmithKline –Letter of Agreement 

Date: January 1, 2008 

_____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 8 of 11 

	 	Proposed
            RoW
	
	Proposed
            Americas

	     	
*  	    	
*  	 	* 	    	
*  
	 	 	 	 	 	 	 	 
	
Test       	    	       	    	 	 	       	    
	
PROTEIN ELECTROPHORESIS, SERUM (SERUM     	
*  	       	
*  	 	* 	       	
*  
	
PEP)      	    	       	    	 	 	       	    
	
PROTEIN ELECTROPHORESIS, URINE (URINE PEP)        	
*  	       	
*  	 	* 	       	
*  
	
PROTEIN TOTAL, URINE      	
*  	       	
*  	 	* 	       	
*  
	
PROTEIN/CREATININE RATIO, URINE   	
*  	       	
*  	 	* 	       	
*  
	
PROTHROMBIN TIME WITH INR 	
*  	       	
*  	 	* 	       	
*  
	
PSA FREE & TOTAL      	
*  	       	
*  	 	* 	       	
*  
	
PSA, TOTAL (Centaur)      	
*  	       	
*  	 	* 	       	
*  
	
RECOMBIGEN HIV-1  	
*  	       	
*  	 	* 	       	
*  
	
RETICULOCYTE CELL COUNT   	
*  	       	
*  	 	* 	       	
*  
	
RHEUMATOID FACTOR 	
*  	       	
*  	 	* 	       	
*  
	
RPR (MONITOR)     	
*  	       	
*  	 	* 	       	
*  
	
SALICYLATE        	
*  	       	
*  	 	* 	       	
*  
	
T-3 UPTAKE        	
*  	       	
*  	 	* 	       	
*  
	
T-4 (THYROXINE) TOTAL     	
*  	       	
*  	 	* 	       	
*  
	
T-4 (THYROXINE), FREE     	
*  	       	
*  	 	* 	       	
*  
	
TESTOSTERONE, TOTAL       	
*  	       	
*  	 	* 	       	
*  
	
THEOPHYLLINE      	
*  	       	
*  	 	* 	       	
*  
	
THYROID STIMULATING HORMONE       	
*  	       	
*  	 	* 	       	
*  
	
TRIGLYCERIDES     	
*  	       	
*  	 	* 	       	
*  
	
TRIIODOTHYRONINE, FREE    	
*  	       	
*  	 	* 	       	
*  
	
TRIIODOTHYRONINE, TOTAL   	
*  	       	
*  	 	* 	       	
*  
	
TROPONIN I        	
*  	       	
*  	 	* 	       	
*  
	
URINALYSIS W/UROBILINOGEN 	
*  	       	
*  	 	* 	       	
*  
	
URINALYSIS, MACROSCOPIC   	
*  	       	
*  	 	* 	       	
*  
	
URINALYSIS, MICROSCOPIC   	
*  	       	
*  	 	* 	       	
*  
	
URINALYSIS, ROUTINE       	
*  	       	
*  	 	* 	       	
*  
	
VALPROIC ACID     	
*  	       	
*  	 	* 	       	
*  
	
VITAMIN B12       	
*  	       	
*  	 	* 	       	
*  
	
VITAMIN B12/FOLIC ACID    	
*  	       	
*  	 	* 	       	
*  

GlaxoSmithKline –Letter of 

Agreement Date: January 1, 2008 

_____________________________________ 

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 9 of 11 

	
Other Fees 	   	   	   	   
	     
	
  * Fees    	  	
RoW        	
                                Americas   
	   	
2008 Quest 	
2009 Quest 	
2008Quest  	
2009 Quest 
	  	
Proposal   	
Proposal   	
Proposal   	
Proposal   
	
  Project Management 	
*  	
        *      	
*  	
*  
	
  Data Management    	
*  	
        *      	
*  	
*  
	
  Logistics  	
*  	
        *      	
*  	
*  
	
  Management 	  	  	  	  
	
                                            Total   	
*  	
        *      	
*  	
*  
	     
	
  * Fees    	  	  	   	   
	   	
Quest      	
      Quest Proposal 
	   	   
	  	
Proposal   	  	   	   
	
  Project Management 	
*  	
        *      	   	   
	
  Data Management    	
*  	
        *      	   	   
	
  Logistics  	
*  	
        *      	   	   
	     
	     
	     
	
  Kits  	  	  	   	   
	  	
RoW        	
Americas   	   	   
	   	
2008 Quest 	
2009 Quest 	   	   
	  	
Proposal   	
Proposal   	   	   
	
  *-* components        	
*  	
        *      	   	   
	
  *-* components        	
*  	
        *      	   	   
	
  <* components      	
*  	
        *      	   	   
	     
	     
	
  Quest *       	   	   	   	   
	
  (Americas only)       	
Americas   	
Americas   	   	   
	
  *   	
*  	
        *      	   	   
	     
	     
	     
	
  Storage       	  	  	   	   
	  	
RoW        	
Americas   	   	   
	
  In 	
*  	
        *      	   	   
	
  Maintenance        	
*  	
        *      	   	   
	
  Pull       	
*  	
        *      	   	   

GlaxoSmithKline –Letter of

Agreement Date: January 1, 2008 

_____________________________________

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

Page 10 of 11 

	
          Attachment #2 

	 
	  	     	  	     	 	 	 	    	  
	 	 	 	 	Potential Key Performance
    Metrics	 	 	 	 
	
      
	     	 	     	 	     	
      
	     	
      Implementation 

	Category
	     	Performance
    Metric
	     	Qualifier
	     	Target
	    	Status
	
Protocol  	     	
Approval of CLW within    	     	
  Percentage of studies that 	     	
100       	
% 	
*  
	
Initiation        	     	
agreed specified  	     	
  receive CLW approval by date       	     	    	     	   
	  	     	
timeline in CLW   	     	
  specified in CLW   	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Site Initiation   	     	
On-time study start       	     	
  Percentage of kits to first site per       	     	
100       	
% 	
*  
	  	     	  	     	
  study delivered on time    	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Site Support      	     	
Data query turn-  	     	
  Percentage within 24 hours: time   	     	
100       	
% 	
*  
	 	 	 	 	 	 	 	 	 
	
Services  	     	
around-time       	     	
  of receipt of data query to date   	     	    	     	   
	 	 	 	 	 closed on database
	 	 	 	 
	 	 	 	 	 	 	 	 	 
	
Lab Operations    	     	
Turn-around-time for      	     	
  Percentage of samples received     	     	
100       	
% 	
*  
	   	     	
sample receipt    	     	
  in lab within 36 hours of  	     	    	     	   
	  	     	  	     	
  collection time.   	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Lab Operations    	     	
Percentage of test        	     	
  The elapsed time from when the     	     	
100       	
% 	
*  
	   	     	
reported within   	     	
  specimen is received in the        	     	    	     	   
	   	     	
expected turn around      	     	
  laboratory until the analytical    	     	    	     	   
	   	     	
time      	     	
  result is approved and released    	     	    	     	   
	   	     	   	     	
  into TopCat and available for      	     	    	     	   
	  	     	  	     	
  reporting to the Investigator site.        	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Lab Operations    	     	
Percentage of tests not   	     	
  Percentage of tests not    	     	
0 	
% 	
*  
	   	     	
performed/not     	     	
  performed/not reportable by        	     	    	     	   
	  	     	
reportable        	     	
  reason     	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Lab Operations    	     	
Percentage of     	     	
  Percentage of samples shipped      	     	
100       	
% 	
*  
	   	     	
shipments/samples 	     	
  on time as per defined timelines   	     	    	     	   
	   	     	
shipped on time to third  	     	   	     	    	     	   
	  	     	
party     	     	  	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Lab Operations    	     	
Number of lost    	     	
  Number of lost samples     	     	
0 	     	
*  
	   	     	
samples   	     	
  (internally and externally) by     	     	    	     	   
	  	     	  	     	
  reason     	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Data      	     	
Complete Data Set 	     	
  Percentage of data 	     	
95        	
% 	
*  
	
Management        	     	
delivered on time and     	     	
  transmissions delivered on time    	     	    	     	   
	   	     	
defect free       	     	
  error free (number of      	     	    	     	   
	  	     	  	     	
  resubmissions)     	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Financial 	     	
Budget reconciliation to  	     	
  Variance between budgeted vs       	     	
95        	
% 	
*  
	
Management        	     	
plan      	     	
  actual costs       	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Financial 	     	
Comparison of     	     	
  Variance between budgeted vs       	     	
95        	
% 	
*  
	
Management        	     	
budgeted to actual        	     	
  actual costs       	     	    	     	   
	  	     	
transportation costs      	     	  	     	   	    	  
	 	 	 	 	 	 	 	 	 
	
Financial 	     	
Days sales outstanding    	     	
  Percentage of invoices paid        	     	
100       	
% 	
*  
	
Management        	     	  	     	
  within 30 days     	     	   	    	  

GlaxoSmithKline –Letter of Agreement Date: 

January 1, 2008 

_____________________________________

* Confidential treatment has been requested. The redacted material has been separately filed with the Commission.

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