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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                           ---------------------------

                                   FORM 10-K/A
                                 Amendment No. 1

                  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                   For the fiscal year ended December 31, 2002

                         Commission File Number: 1-12213

                            -------------------------

                                  COVANCE INC.
             (Exact name of Registrant as specified in its Charter)

           Delaware                                      22-3265977
   (State of Incorporation)                 (I.R.S. Employer Identification No.)

210 Carnegie Center, Princeton, New Jersey                     08540
(Address of Principal Executive Offices)                     (Zip Code)

       Registrant's telephone number, including area code: (609) 452-4440

                             ----------------------

           Securities registered pursuant to Section 12(b) of the Act:

                                                         Name of Each Exchange
             Title of Each Class                          on Which Registered
             -------------------                          -------------------
        Common Stock, $.01 Par Value                    New York Stock Exchange

             Securities registered pursuant to Section 12(g) of the Act: None

                                   ---------------------

      Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes [X] No [ ]

      Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. [X]

      Indicate by checkmark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act). Yes [X] No [ ]

      The aggregate market value of the shares of common stock held by
non-affiliates of the Registrant was $1,122,680,812 on June 28, 2002, the last
business day of Registrant's most recently completed second fiscal quarter.

      As of February 11, 2003, the Registrant had 61,163,042 shares of Common
Stock outstanding.

                       DOCUMENTS INCORPORATED BY REFERENCE

      The Company's definitive Proxy Statement is incorporated by reference into
Items 10, 11, 12 and 13 of Part III of this Form 10-K.

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                                EXPLANATORY NOTE

This Amendment No. 1 to the Registrant's Annual Report on Form 10-K for the
fiscal year ended December 31, 2002 (the "Form 10-K") is being filed for the
purpose of including the certifications of the Registrant's Chief Executive
Officer and Chief Financial Officer.


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                                   SIGNATURES

      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, Covance has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                  COVANCE INC.


Dated: March 6, 2003              By: /s/ William E. Klitgaard
                                      -------------------------------
                                      William E. Klitgaard
                                      Corporate Senior Vice President
                                      and Chief Financial Officer



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                                 CERTIFICATIONS


I, Christopher A. Kuebler, certify that:

1.       I have reviewed this Annual Report on Form 10-K of Covance Inc.:

2.       Based on my knowledge, this annual report does not contain any untrue
         statements of a material fact or omit to state a material fact
         necessary to make the statements made, in light of the circumstances
         under which such statements were made, not misleading with respect to
         the period covered by this annual report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this annual report, fairly present in all
         material respects the financial condition, results of operations and
         cash flows of the registrant as of, and for, the periods presented in
         this annual report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and
         we have:

         a.   designed such disclosure controls and procedures to ensure that
              material information relating to the registrant, including
              consolidated subsidiaries, is made known to us by others within
              those entities, particularly during the period in which this
              annual report is being prepared;

         b.   evaluated the effectiveness of the registrant's disclosure
              controls and procedures as of a date within 90 days prior to the
              filing date of this annual report (the "Evaluation Date"); and

         c.   presented in this annual report our conclusions about the
              effectiveness of the disclosure controls and procedures based on
              our evaluation as of the Evaluation Date;

5.       The registrant's other certifying officers and I have disclosed, based
         on our most recent evaluation, to the registrant's auditors and the
         audit committee of registrant's board of directors (or persons
         performing the equivalent function):

         a.   all significant deficiencies in the design or operation of
              internal controls which could adversely affect the registrant's
              ability to record, process, summarize and report financial data
              and have identified for the registrant's auditors any material
              weaknesses in internal controls; and

         b.   any fraud, whether or not material, that involves management or
              other employees who have a significant role in the registrant's
              internal controls; and

6.       The registrant's other certifying officers and I have indicated in this
         annual report whether or not there were significant changes in internal
         controls or in other factors that could significantly affect internal
         controls subsequent to the date of our most recent evaluation,
         including any corrective actions with regard to significant
         deficiencies and material weaknesses.



Date: March 6, 2003
      ------------------------
                                                /s/  CHRISTOPHER A. KUEBLER
                                                ---------------------------
                                                   Christopher A. Kuebler
                                                   Chairman of the Board
                                                   and Chief Executive Officer
                                                   (Principal Executive Officer)

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<PAGE>

                                 CERTIFICATIONS


I, William E. Klitgaard, certify that:

1.       I have reviewed this Annual Report on Form 10-K of Covance Inc.:

2.       Based on my knowledge, this annual report does not contain any untrue
         statements of a material fact or omit to state a material fact
         necessary to make the statements made, in light of the circumstances
         under which such statements were made, not misleading with respect to
         the period covered by this annual report;

3.       Based on my knowledge, the financial statements, and other financial
         information included in this annual report, fairly present in all
         material respects the financial condition, results of operations and
         cash flows of the registrant as of, and for, the periods presented in
         this annual report;

4.       The registrant's other certifying officers and I are responsible for
         establishing and maintaining disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and
         we have:

         a.   designed such disclosure controls and procedures to ensure that
              material information relating to the registrant, including
              consolidated subsidiaries, is made known to us by others within
              those entities, particularly during the period in which this
              annual report is being prepared;

         b.   evaluated the effectiveness of the registrant's disclosure
              controls and procedures as of a date within 90 days prior to the
              filing date of this annual report (the "Evaluation Date"); and

         c.   presented in this annual report our conclusions about the
              effectiveness of the disclosure controls and procedures based on
              our evaluation as of the Evaluation Date;

5.       The registrant's other certifying officers and I have disclosed, based
         on our most recent evaluation, to the registrant's auditors and the
         audit committee of registrant's board of directors (or persons
         performing the equivalent function):

         a.   all significant deficiencies in the design or operation of
              internal controls which could adversely affect the registrant's
              ability to record, process, summarize and report financial data
              and have identified for the registrant's auditors any material
              weaknesses in internal controls; and

         b.   any fraud, whether or not material, that involves management or
              other employees who have a significant role in the registrant's
              internal controls; and

6.       The registrant's other certifying officers and I have indicated in this
         annual report whether or not there were significant changes in internal
         controls or in other factors that could significantly affect internal
         controls subsequent to the date of our most recent evaluation,
         including any corrective actions with regard to significant
         deficiencies and material weaknesses.



Date: March 6, 2003
      ------------------------
                                         /s/  WILLIAM E. KLITGAARD
                                         -------------------------------
                                         William E. Klitgaard
                                         Corporate Senior Vice President
                                         and Chief Financial Officer
                                         (Principal Financial Officer)

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                                 Exhibit Index
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   Exhibit No.                      Description
   -----------                      -----------

      99.1    Certification pursuant to 18 U.S.C. Section 1350, as Adopted
              pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 -
              Christopher A. Kuebler. Filed herewith.

      99.2    Certification pursuant to 18 U.S.C. Section 1350, as Adopted
              pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 -
              William E. Klitgaard. Filed herewith.


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