UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

May 19, 2004
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(Date of earliest event reported)


LABORATORY CORPORATION OF AMERICA HOLDINGS
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(Exact name of registrant as specified in its charter)


   DELAWARE                1-11353             13-3757370
 --------------          -----------         --------------
(State or other         (Commission          (IRS Employer
jurisdiction of         File Number)         Identification
incorporation)                                   Number)


358 SOUTH MAIN STREET, BURLINGTON, NORTH CAROLINA 27215
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(Address of principal executive offices)

336-229-1127
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(Registrant's telephone number, including area code)


ITEM 9. Regulation FD Disclosure

On May 19, 2004, Laboratory Corporation of America -Registered Trademark-
Holdings (LabCorp -Registered Trademark-)(NYSE:LH) announced that
Thomas P. Mac Mahon, Chairman and Chief Executive Officer, is scheduled
to speak at the Banc of America Securities Health Care Conference in
Las Vegas, NV on May 20, 2004 at 10:00 a.m. Pacific Time. A live audio
webcast of the presentation will be available via the Company web site at
www.LabCorp.com.  A replay of the audio webcast will be available through
June 3, 2004.


99.1  Press release of the Company dated May 19, 2004.


SIGNATURES

Pursuant to the requirements of the Securities and
Exchange Act of 1934, the registrant has duly caused
this report to be signed on its behalf by the
undersigned hereunto duly authorized.

          LABORATORY CORPORATION OF AMERICA HOLDINGS
          ------------------------------------------
                        (Registrant)

               By:/s/ BRADFORD T. SMITH
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                      Bradford T. Smith
                      Executive Vice President
                      and Secretary


Date: May 19, 2004

Laboratory Corporation of America-Registered Trademark-Holdings
358 South Main Street
Burlington, NC   27215
Telephone:  (336) 584-5171

For Immediate Release
Contact:  Pamela Sherry - (336) 436-4855
Shareholder Direct: (800) LAB-0401
Company Information: www.LabCorp.com

LABCORP-REGISTERED TRADEMARK- SCHEDULED TO PRESENT AT THE
BANC OF AMERICA SECURITIES HEALTH CARE CONFERENCE

Burlington, NC, May 19, 2004 - Laboratory Corporation of America-Registered
Trademark- Holdings (LabCorp-Registered Trademark-) (NYSE: LH) today announced
that Thomas P. Mac Mahon, Chairman and Chief Executive Officer, is scheduled
to speak at the Banc of America Securities Health Care Conference in
Las Vegas, NV on May 20, 2004 at 10:00 a.m. Pacific Time. A live audio
webcast of the presentation will be available via the Company web site at
www.LabCorp.com.  A replay of the audio webcast will be available through
June 3, 2004.

About LabCorp
Laboratory Corporation of America-Registered Trademark- Holdings is a pioneer
in commercializing new diagnostic technologies and the first in its industry
to embrace genomic testing. With annual revenues of $2.9 billion in 2003,
approximately 23,000 employees nationwide, and more than 220,000 clients,
LabCorp offers over 4,400 clinical assays ranging from blood analyses to HIV
and genomic testing. LabCorp combines its expertise in innovative clinical
testing technology with its Centers of Excellence: The Center for Molecular
Biology and Pathology, in Research Triangle Park, NC; National Genetics
Institute, Inc. in Los Angeles, CA; ViroMed Laboratories, Inc. based in
Minneapolis, MN; The Center for Esoteric Testing in Burlington, NC; and
DIANON Systems, Inc. based in Stratford, CT.  LabCorp clients include
physicians, government agencies, managed care organizations, hospitals,
clinical labs, and pharmaceutical companies. To learn more about our growing
organization, visit our web site at: www.LabCorp.com.

Each of the above forward-looking statements is subject to change based on
various important factors, including without limitation, competitive actions
in the marketplace and adverse actions of governmental and other third-party
payors.  Actual results could differ materially from those suggested by these
forward-looking statements. Further information on potential factors that
could affect LabCorp's financial results is included in the Company's
Form 10-K for the year ended December 31, 2003, and subsequent SEC filings.