Document:

EXHIBIT 10.2

AMENDMENT NO. 2 TO THIRD AMENDED AND RESTATED CREDIT AND

SECURITY AGREEMENT

          THIS AMENDMENT NO. 2 TO THIRD AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT  (this “Amendment”) is entered into as of April 28, 2006, by and among:

	          	          (1)     QUEST
          DIAGNOSTICS RECEIVABLES INC., a Delaware corporation (the “Borrower”),

                 (2)     QUEST
          DIAGNOSTICS INCORPORATED, a Delaware corporation as initial servicer
           (together with the Borrower, the “Loan
          Parties”), 

                 (3)     VARIABLE
          FUNDING CAPITAL COMPANY LLC, a Delaware limited liability company as
          assignee of Blue Ridge Asset Funding Corporation (“VFCC”), and
          WACHOVIA BANK, NATIONAL ASSOCIATION, in its capacity as a Liquidity
          Bank to VFCC (together with VFCC, the VFCC
          Group”),

                 (4)     ATLANTIC
          ASSET SECURITIZATION LLC, a Delaware limited liability company formerly
          known as Atlantic Asset Securitization Corp. (together with its successors, “Atlantic” and
          together with VFCC, the “Conduits”), and
          CALYON NEW YORK BRANCH, in its capacity as a Liquidity Bank to Atlantic
          (together with Atlantic, the “Atlantic
          Group”),

                 (5)     WACHOVIA
          BANK, NATIONAL ASSOCIATION, in its capacity as agent for the VFCC Group,
          and CALYON NEW YORK BRANCH, in its capacity as agent for the Atlantic
          Group (in such latter capacity, together with its successors in such
          latter capacity, the “Atlantic
          Agent” or a “Co-Agent”), and

                 (6)     WACHOVIA
          BANK, NATIONAL ASSOCIATION, as administrative agent for the VFCC Group,
          the Atlantic Group and the Co-Agents (in such capacity, together with
          any successors thereto in such capacity, the “Administrative
          Agent” and together with
          each of the Co-Agents, the “Agents”, 

    

  with respect to that certain Third Amended and Restated
Credit and Security Agreement dated as of April 20, 2004, by and among the parties
hereto (as heretofore amended, the “Existing
Agreement” which, as amended hereby,
is hereinafter referred to as the “Agreement”).

          Unless otherwise indicated, capitalized terms used in this Amendment are used with the meanings attributed thereto in the Existing Agreement.

W I T N E S S E T H :

	          	          WHEREAS, on
          December 1, 2005, Blue Ridge Asset Funding Corporation
          assigned all of its right, title and interest in, to any under the
          Existing Agreement and other Transaction documents to VFCC; and

                 WHEREAS, Atlantic
          Asset Securitization Corp. underwent a conversion in status to a limited
          liability company known as Atlantic Asset Securitization LLC pursuant
          to Delaware law; and

                 WHEREAS, the
          parties hereto desire to amend the Existing Agreement as hereinafter
    set forth;
    

                   NOW,
THEREFORE, in consideration of the premises
and the mutual agreements herein contained, the parties hereto hereby agree as
follows:

                    1.       Amendment
to Existing Agreement.  Subject
to the terms and  conditions hereinafter set forth, the parties hereby agree
to amend and restated Schedule 6.1(o) to the Existing Agreement as set forth
in Ann ex A hereto.

                    2.       Representations.

                    2.1.     Each of the Loan Parties represents and warrants to the Lenders and the Agents that it has duly authorized, executed and delivered this Amendment and that the Agreement constitutes, a
legal, valid and binding obligation of such Loan Party, enforceable in accordance with its terms (except as enforceability may be limited by applicable bankruptcy, insolvency, or similar laws affecting the enforcement of creditors’ rights
generally or by equitable principles relating to enforceability).

                    2.2.     Each of the Loan Parties further represents and warrants to the Lenders and the Agents that each of its representations and warranties set forth in Section 6.1 of the Agreement is true and
correct as of the date hereof and that no Event of Default or Unmatured Default exists as of the date hereof and is continuing.

                    3.      Conditions Precedent. This Amendment shall become effective as of the
date first above written upon (a) receipt by the Administrative Agent of a counterpart hereof duly executed by each of the parties hereto, and (b) receipt by the Administrative Agent of one or more Collection Account Agreements, duly executed by the
parties thereto, with respect to the Key Bank Collection Accounts listed on Annex A hereto.

                    4.      Miscellaneous.

                    4.1.     Except as expressly amended hereby, the Existing Agreement and shall remain unaltered and in full force and effect, and each of the parties hereby ratifies and confirms the Agreement and
each of the other Transaction Documents to which it is a party.

                    4.2.     THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF NEW YORK WITHOUT REFERENCE TO PRINCIPLES OF CONFLICTS OF LAW.

                    4.3.     EACH LOAN PARTY HEREBY ACKNOWLEDGES AND AGREES THAT:

                    4.3.1.   IT
IRREVOCABLY (i) SUBMITS TO THE NON-EXCLUSIVE JURISDICTION, FIRST, OF ANY UNITED
STATES FEDERAL COURT, AND SECOND, IF FEDERAL JURISDICTION IS NOT AVAILABLE, OF
ANY NEW YORK STATE COURT, IN EITHER CASE SITTING
TN NEW YORK COUNTY, NEW YORK, IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING
TO THE AGREEMENT, AND (ii) WAIVES, TO THE FULLEST EXTENT
IT MAY EFFECTIVELY DO SO, THE DEFENSE OF AN INCONVENIENT FORUM TO THE MAINTENANCE
OF AN ACTION OR PROCEEDING [N SUCH COURTS.

                    4.3.2.    TO THE EXTENT THAT IT HAS OR HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM THE JURISDICTION OF ANY COURT OR FROM ANY LEGAL PROCESS (WHETHER THROUGH SERVICE OR NOTICE, AYI’ACHMENT PRIOR TO
JUDGMENT, ATTACHMENT IN AID TO EXECUTION, EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, IT HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS UNDER OR IN CONNECTION WITH THE AGREEMENT.

                    4.4.     This Amendment may be executed in any number of counterparts and by the different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original
and all of which when taken together shall constitute one and the same Amendment.

                    IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of the date first above written.

	 	
QUEST DIAGNOSTICS RECEIVABLES INC.
 
	 

 
	 	
  By: 
 	
/s/       Joseph P. Manory
 
	 	 	Name: Joseph P. Manory 
	 	 	Title:   Vice President and Treasurer 
	
      
	
      
	 

 	QUEST DIAGNOSTICS INCORPORATED 
	 
 
	 	
  By: 
 	
/s/       Joseph P. Manory
 
	 	 	Name: Joseph P. Manory
	 	 	Title:   Vice President and Treasurer 
	
       
 
	
     
	 

 	 WACHOVIA BANK, NATIONAL ASSOCIATION, INDIVIDUALLY,   AS ADMINISTRATIVE AGENT AND AS VFCC AGENT 
	 

 
	 
		
  By: 
 	
/s/       Elizabeth R. Wagner
 
	
     
 	 	Name: Elizabeth R. Wagner
	 	 	Title:   Managing Director 
	
     

	 	VARIABLE
    FUNDING CAPITAL COMPANY LLC 
	 	 
	 
	BY: WACHOVIA CAPITAL MARKET~
    LLC, ITS ATTORNEY-IN-FACT 
	 

 
	 

 
	 	 By: 
 	
/s/       Douglas R. Wilson, Sr.
 
	 	 	Name: Douglas R. Wilson, Sr.
	 	 	Title:   Vice President 
	 
 
	 
 	WACHOVIA BANK, NATIONAL ASSOCIATION,
    INDIVIDUALLY, 
	 	 AS ADMINISTRATIVE AGENT
    AND AS VFCC AGENT 
	 

 
	 
	By: 
 	
/s/       Elizabeth R. Wagner
 
	 	 	Name: Elizabeth R. Wagner 
	 	 	Title:   Managing Director 
	
        

	 	 VARIABLE FUNDING CAPITAL
    COMPANY LLC 
	 

 
	 	
BY: WACHOVIA CAPITAL MARKET~ LLC, ITS ATTORNEY-IN-FACT
 
	 

 
	 
	 By: 
 	
  /s/       Douglas R. Wilson, Sr.
 
	 	 	  Name: Douglas R. Wilson, Sr. 
	 	 
 	
  Title:   Vice President
 
	 

 
	 

 
	 	ATLANTIC ASSET SECURITIZATION LLC
 
	 

 
	 	 By: CALYON NEW YORK BRANCH
 
	 	     AS ATTORNEY-IN-FACT
 
	 

 
	 

 
	 	 By:  	
/s/       Anthony Brown
 
	 	 	Name: Anthony Brown 
	 	 
 	
Title:   Vice President
 
	 

 
	 

 
		 By: 
 	
/s/       Tina
Kourmpetis
 
	 	 	 Name: Tina Kourmpetis 
	 
 	 
 	
Title:   Managing Director
 
	 

 
	 

 
	 	 CALYON NEW YORK BRANCH, INDIVIDUALLY, AND AS
 
	 	ATLANTIC AGENT
 
	 

 
	 

 
	

 	 By: 
 	
/s/       Anthony
Brown
 
	 	 	Name: Anthony Brown 
	 	 
 	
 Title:   Vice President
 
	 

 
	 

 
	 	 By:  	
/s/       Tina Kourmpetis
 
	 	 	Name: Tina Kourmpetis 
	
   
 	 
 	
 Title:   Managing DirectorEXHIBIT 10.3 

AMENDMENT NO. 3 TO THIRD AMENDED AND RESTATED CREDIT AND 

SECURITY AGREEMENT

          THIS AMENDMENT NO. 3 TO THIRD AMENDED AND RESTATED CREDIT AND SECURITY AGREEMENT (this “Amendment”) is entered into as of November 10, 2006, by and among: 

          (1)     QUEST
DIAGNOSTICS RECEIVABLES INC., a Delaware corporation (the Borrower”), 

          (2)     QUEST DIAGNOSTICS INCORPORATED, a Delaware corporation as initial servicer (together with the Borrower, the “Loan
Parties”), 

          (3)     VARIABLE FUNDING CAPITAL COMPANY LLC, a Delaware limited liability company as assignee of Blue Ridge Asset Funding Corporation (“VFCC”), and WACHOVIA BANK, NATIONAL ASSOCIATION, in its capacity as a Liquidity Bank to VFCC (together with VFCC, the VFCC Group”), 

          (4)     ATLANTIC ASSET SECURITIZATION LLC, a Delaware limited liability company formerly known as Atlantic Asset Securitization Corp. (together with its successors,
“Atlantic” and together with VFCC, the “Conduits”), and CALYON NEW YORK BRANCH, in its capacity
as a Liquidity Bank to Atlantic (together with Atlantic, the “Atlantic Group”), 

          (5)     WACHOVIA
BANK, NATIONAL ASSOCIATION, in its capacity as agent for the VFCC Group, and
CALYON NEW YORK BRANCH, in its capacity as agent for the Atlantic Group (in
such latter capacity, together with its successors in such latter capacity, the “Atlantic
Agent” or a “Co-Agent”),
and

          (6)     WACHOVIA
BANK, NATIONAL ASSOCIATION, as administrative agent for the VFCC Group, the Atlantic
Group and the Co-Agents (in such capacity, together with any  successors thereto
in such capacity, the “Administrative Agent” and
together with each of the Co-Agents, the “Agents”),

with respect to that certain Third Amended and Restated Credit and Security Agreement
  dated as of April 20, 2004, by and among the parties hereto (as heretofore amended,
  the “Existing Agreement” which,
  as amended hereby, is hereinafter referred to as the “Agreement”). 

                    Unless otherwise indicated, capitalized terms used in this Amendment are used with the meanings attributed thereto in the Existing Agreement. 

W I T N E S S E
T H : 

                    WHEREAS, the parties hereto have agreed to add LabOne, Inc., ExamOne World Wide, Inc., Central Plains Laboratories, LLC, LabOne of Ohio, Inc., and Systematic
Business Services, Inc. as Originators; and 

                    WHEREAS, the parties hereto desire to amend the Existing Agreement as hereinafter set forth; 

                    NOW, THEREFORE, in consideration of the premises and the mutual agreements herein contained, the parties hereto hereby agree as follows: 

                    1.     Amendments
to Existing Agreement. Subject
to the terms and conditions hereinafter set  forth, the parties hereby agree
to amend the Existing Agreement as follows:

                    1.1    The
definition of “Eligible Receivable,” is
hereby amended  to include the following provision after paragraph (p): 

	          	                  Notwithstanding
        the foregoing, in no event will a LabOne Receivable be an Eligible Receivable
        (i) on or before November 30, 2006, to the extent the aggregate Outstanding
        Balance of the LabOne Receivables that are Eligible Receivables exceeds $30,000,000;
        or (ii) after November 30, 2006, if there is not a fully executed Collection
        Account Agreement in place with respect to each Lockbox and Collection
        Account into which the proceeds of any LabOne Receivable are deposited;
        or (iii) on or after December 8, 2006, if the Loan Parties have not provided
    an updated Schedule 6.1(o) to the Administrative Agent.

                    1.2    The following definitions are hereby added to Exhibit A in their appropriate alphabetical order: 

	          	                   “Clinical
              Laboratory Services” means
              clinical laboratory, anatomic pathology or other diagnostics testing
              services (including, without limitation, routine and esoteric clinical
              laboratory services (including genetics testing), clinical laboratory
              services involved with clinical trials, point-of-care testing,
              clinical laboratory services involving corporate healthcare and
              services involved with managing hospital laboratories), health
              screening and risk assessment services, and information services
              involving the provision of data or information programs, services
              or products which substantially consists of laboratory or other
              medical data. 

                           “LabOne
              Receivable,” means a Receivable
              that arises out of a sale of goods or services by any of LabOne,
              Inc., ExamOne World Wide, Inc., Central Plains Laboratories, LLC,
    LabOne of Ohio, Inc., and Systematic Business Services, Inc.

                    1.3      Section 6.1(o)(i) is hereby amended and restated in its entirety to read as follows:

	          	                   One
        of the Loan Parties or the applicable Originator has instructed all Obligors
        of all Receivables to pay all Collections thereon either (A) by mail
        addressed to a Lockbox or (B) by wire transfer or other electronic funds
        transfer directly to a Collection Account in the name of the applicable
        Originator, as sub-servicer, or in the name of the Borrower. Items received
        in the Lockboxes are deposited for collection each Business Day into
        a Collection Account in the name of the applicable Originator or the
        Borrower, and all collected and available funds from time to time in
        each Collection Account in the name of any Originator are swept each
        day to a Collection Account in the name of the Borrower. Each of the
        agreements establishing and governing the maintenance of the Lockboxes
        and Collection Accounts is in full force and effect, and each of the
        Lockboxes and Collection Accounts is subject to a Collection Account
        Agreement that is in full force and effect; provided,
        however, that, prior to December 1,
        2006, or such later date as the Administrative Agent may specify in writing,
        failure to have a Collection Account Agreement in place with respect
        to Lockboxes and Collection Accounts containing solely the proceeds of
        LabOne Receivables shall not constitute a breach of this Section 6.1(o)(i)
    .
	 	 
	                    1.4     Section 7.1(i)(i) is hereby amended and restated
    in its entirety to read as follows:
	 	 
	 	                     In
        accordance with Section 6.1(o)(i), each of the Loan Parties will instruct
        all Obligors to make all payments on Receivables directly to a Lockbox
        or Collection Account in the name of the applicable Originator (as sub-servicer
        for the Borrower and the Secured Parties), the Borrower or the Administrative
        Agent or its designee, which is subject to a Collection Account Agreement
        and, if such Collection Account is in the name of an Originator, it is
        swept on a daily basis into a Collection Account in the name of the Borrower
        (or the Administrative Agent or its designee) which is subject to a Collection
        Account Agreement. The Borrower will cause each of the Collection Accounts
        that is currently in the name of an Originator to be transferred to it
        and into its own name within a reasonable period of time after the initial
        Advance hereunder; provided, however, that,
        prior to December 1, 2006, or such later date as the Administrative Agent
        may specify in writing, failure to have a Collection Account Agreement
        in place with respect to Lockboxes and Collection Accounts containing
        solely the proceeds of LabOne Receivables shall not constitute a breach
    of this Section 7.1(i)(i) .
	 	 
	                    1.5     Exhibit
        3.1(A) is hereby amended and restated in its entirety as set forth in Annex
    A hereto.
	 
	                    2.       Representations. 

                     2.1.    Each
    of the Loan Parties represents and warrants to the Lenders and the Agents
    that it has duly authorized, executed and delivered this Amendment and that
    the Agreement constitutes, a legal,  valid and binding obligation of such
    Loan Party, enforceable in accordance with its terms (except as enforceability
    may be limited by applicable bankruptcy, insolvency, or similar laws affecting
    the enforcement of creditors’ rights
generally or by equitable principles relating to enforceability). 

                    2.2.    Each
of the Loan Parties further represents and warrants to the Lenders and the Agents
that each of its representations and warranties set forth in Section 6.1 of the 

Agreement is true and correct as of the date hereof and that no Event of Default or Unmatured Default exists as of the date hereof and is continuing. 

                    3.        Conditions
Precedent. This
Amendment shall become effective as of the date first above  written upon receipt
by the Administrative Agent of a counterpart hereof duly executed by each of
the parties hereto. 

                    4.        Miscellaneous. 

                    4.1.     Except as expressly amended hereby, the Existing Agreement shall remain unaltered and in full force and effect, and each of the parties hereby ratifies and confirms the Agreement and each of the
other Transaction Documents to which it is a party. 

                    4.2.     THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF NEW YORK WITHOUT REFERENCE TO PRINCIPLES OF CONFLICTS OF LAW. 

                    4.3.     EACH LOAN PARTY HEREBY ACKNOWLEDGES AND AGREES THAT: 

                    4.3.1.   IT IRREVOCABLY (i) SUBMITS TO THE NON-EXCLUSIVE JURISDICTION, FIRST, OF ANY UNITED STATES FEDERAL COURT, AND SECOND, IF FEDERAL JURISDICTION IS NOT AVAILABLE, OF ANY NEW YORK STATE COURT, IN
EITHER CASE SITTING IN NEW YORK COUNTY, NEW YORK, IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THE AGREEMENT, AND (ii) WAIVES, TO THE FULLEST EXTENT IT MAY EFFECTIVELY DO SO, THE DEFENSE OF AN INCONVENIENT FORUM TO THE MAINTENANCE OF AN
ACTION OR PROCEEDING IN SUCH COURTS. 

                    4.3.2.  TO THE EXTENT THAT IT HAS OR HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM THE JURISDICTION OF ANY COURT OR FROM ANY LEGAL PROCESS (WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO JUDGMENT,
ATTACHMENT IN AID TO EXECUTION, EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF OR ITS PROPERTY, IT HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN RESPECT OF ITS OBLIGATIONS UNDER OR IN CONNECTION WITH THE AGREEMENT. 

                    4.4.     This Amendment may be executed in any number of counterparts and by the different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all
of which when taken together shall constitute one and the same Amendment. 

                    IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of the date first above written. 

	 	QUEST DIAGNOSTICS RECEIVABLES
    INC. 
	 

  
	 

  
	
  	By:
  	
/s/       Joseph P. Manory
  
	 	 	Name: Joseph P. Manory
	 	 	Title:   Vice President and Treasurer 
	
          
  
	
          
	 

  
	 

  
	 	QUEST DIAGNOSTICS INCORPORATED  
	 

  
	 

  
	 
	By: 
  	
/s/       Joseph P. Manory
  
	 	 	Name: Joseph P. Manory
	 	 	Title:    Vice President and Treasurer
	
          
  
	
          
  
	 

  
	 

  
	 	WACHOVIA BANK, NATIONAL ASSOCIATION,
  
	 	INDIVIDUALLY, AS ADMINISTRATIVE AGENT AND AS
VFCC AGENT
  
	 

  
	 

  
	 
	By: 
  	
/s/       Elizabeth R. Wagner
  
	 	 	Name: Elizabeth R. Wagner 
	 	 	Title:    Managing Director 
	
          
	 

  
	 	VARIABLE FUNDING CAPITAL COMPANY LLC
  
	 

  
	 	BY: WACHOVIA CAPITAL MARKETS, LLC, ITS ATTORNEY-IN-FACT
  
	 

  
	 

  
	 	By:  	/s/       Douglas
        R. Wilson, Sr.
	 

  	 
  	
Name: Douglas R. Wilson, Sr.
  
	 

  	 
  	
Title:   Vice President
  

	 	
    ATLANTIC ASSET SECURITIZATION LLC  
	 	 	 

  
	 	
By: CALYON NEW YORK BRANCH  
	 	      AS ATTORNEY-IN-FACT  
	 	 	 

  
	 	By:	/s/       Anthony Brown
  
	 	 	
Name: Anthony Brown
  
	 	 	
Title:    Vice President
  
	 	 	 

  
	 	By:	
/s/       Tina Kourmpetis
  
	 	 	
Name: Tina Kourmpetis
  
	 	 	
Title:    Managing Director
  
	 	 	 

  
	 	 	 

  
	 	
CALYON NEW YORK BRANCH, INDIVIDUALLY AND AS ATLANTIC  
	 	
AGENT  
	 	 	 

  
	 	 	 

  
	 	By:	
/s/       Anthony Brown
  
	 	 	
Name: Anthony Brown
  
	 	 	
Title:    Vice President
  
	 	 	 

  
	 	 	 

  
	 	By: 	
/s/       Tina Kourmpetis
  
	 	 	
Name: Tina Kourmpetis
  
	 	 	
Title:    Managing Director

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