SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

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                                  SCHEDULE 13D
                                 (Rule 13d-101)

            INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                 RULE 13d-2(a)

                               (Amendment No. 7)

                   LABORATORY CORPORATION OF AMERICA HOLDINGS
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                                (Name of Issuer)

                         COMMON STOCK, $0.10 PAR VALUE
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                         (Title of Class of Securities)

                                  5054OR 10 2
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                                 (CUSIP Number)

                                Peter R. Douglas
                             Davis Polk & Wardwell
                              450 Lexington Avenue
                               New York, NY 10017
                            Tel. No.: (212) 450-4000
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                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                 March 12, 2002
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            (Date of Event which Requires Filing of This Statement)

   If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1 (b)(3) or (4), check the following box [ ].

          Note. This document is being electronically filed with the Commission
     using the EDGAR system. See Rule 13d-1 (a) for other parties to whom
     copies are to be sent.

     *The remainder of this cover page should be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

     The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).





Schedule 13D
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CUSIP No. 5054OR 10 2                    13D                  Page 2 of 4 Pages

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     1       NAME OF REPORTING PERSONS
             S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

             Roche Holdings, Inc.     51-0304944
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     2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP        (a) [ ]
                                                                     (b) [ ]

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     3       SEC USE ONLY

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     4       SOURCE OF FUNDS

             WC
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     5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
             TO ITEM 2(d) or 2(e).                                       [ ]

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     6       CITIZENSHIP OR PLACE OF ORGANIZATION

             Delaware
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       NUMBER OF        7   SOLE VOTING POWER           3,005,074 shares of
         SHARES                                         Common Stock
      BENEFICIALLY     --------------------------------------------------------
        OWNED BY        8   SHARED VOTING POWER         N/A
          EACH         --------------------------------------------------------
       REPORTING        9   SOLE DISPOSITIVE POWER      3,005,074 shares of
      PERSON WITH                                       Common Stock
                       --------------------------------------------------------
                       10   SHARED DISPOSITIVE POWER    N/A
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    11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             3,005,074 shares of Common Stock
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    12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
             CERTAIN SHARES                                              [ ]

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    13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

             4.24% of Common Stock
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    14       TYPE OF REPORTING PERSON

             CO
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     The following information amends and supplements the Schedule 13D dated
April 28, 1995, as previously amended (as so amended, the "Schedule 13D").

Item 4. Purpose of Transaction

     Item 4 of the Schedule 13D is hereby amended by adding the following:

     On March 12, 2002, Holdings sold 7.0 million shares of the Company's
Common Stock in an underwritten public offering at a price of $86.50 per share
(less underwriting discounts and commissions). On March 18, 2002, Holdings sold
an additional 700,000 shares of the Company's Common Stock pursuant to the
exercise in full of the underwriters' over-allotment option at a price of
$86.50 per share (less underwriting discounts and commissions).

Item 5.  Interest in Securities of the Issuer

     After giving effect to the sales described in Item 4, Holdings
beneficially owns 3,005,074 shares or approximately 4.24% of the Company's
Common Stock.


                                     Page 3




     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
accurate.

     Dated: March 18, 2002


                                             ROCHE HOLDINGS, INC.


                                             By: /s/ Marcel Kohler
                                                --------------------------------
                                                Name:  Marcel Kohler
                                                Title: Secretary


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