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 16, 2007
                             -------------------
                     (Date of earliest event reported)


                LABORATORY CORPORATION OF AMERICA HOLDINGS
                ------------------------------------------
          (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
     ---------------------------------------              -------
     (Address of principal executive offices)            (Zip Code)

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

                                    N/A
                  ---------------------------------------
        (Former name or former address, if changed since last report.)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of
the following provisions:

[ ]  Written communications pursuant to Rule 425 under the Securities Act
     (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act
     (17 CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))

ITEM 7.01. Regulation FD Disclosure
On May 16, 2007 - Laboratory Corporation of America(R) Holdings (LabCorp(R))
announced today that it has entered into an agreement with U.K. based Intema
Ltd. to license its technology for combining first- and second-trimester
Down syndrome screening test results to assess the risk of Down syndrome.

The press release dated May 16, 2007 is attached herewith as Exhibit 99.1.



Exhibits
99.1 Press Release dated May 16, 2007



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
                                    --------------------------------------
                                    Bradford T. Smith
                                    Executive Vice President and Secretary

Date: May 17, 2007



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

Investor Contact:  Scott Fleming - 336-436-4879
Media Contact:  Pam Sherry - 336-436-4855
Shareholder Direct:  800-LAB-0401
Company Information:  www.labcorp.com


LABCORP(R) LICENSES INTEGRATED AND SEQUENTIAL PRENATAL
SCREENING TECHNOLOGY FOR DOWN SYNDROME FROM INTEMA

More Sensitive Technology Improves Assessment of Down Syndrome Risk


Burlington, NC, May 16, 2007 - Laboratory Corporation of America(R) Holdings
(LabCorp(R)) (NYSE: LH), an industry leader in prenatal clinical laboratory
testing, announced today that it has entered into an agreement with U.K. based
Intema Ltd. to license its technology for combining first- and second-trimester
Down syndrome screening test results to assess the risk of Down syndrome.
Terms of the agreement were not disclosed.

In January 2007, the American College of Obstetricians and Gynecologists
(ACOG) issued a Practice Bulletin recommending that, regardless of age, all
pregnant women should be offered screening for Down syndrome. ACOG's new
recommendation states that, ideally, patients should be offered testing that
combines first- and second-trimester screening.

LabCorp is the first full-service, national clinical laboratory in the U.S.
to license Intema's Integrated and Sequential Down syndrome technology for
screening analyses. When Integrated screening and Sequential screening test
results include a fetal ultrasound nuchal translucency measurement, the
highest Down syndrome detection rates are achieved and fewer false-positives
are experienced than with current first- or second-trimester screening.

"LabCorp is pleased to add the Integrated and Sequential Down syndrome
screening tests to our comprehensive menu of prenatal testing services," said
LabCorp's Executive Vice President, Chief Scientific Officer and Medical
Director, Myla P. Lai-Goldman, M.D. "These additional screening tools will
allow physicians to offer patients a broader range of tests for screening
with higher detection rates and low false-positive rates. This can help
reduce the number of invasive tests needed and potentially reduce the number
of procedure-related pregnancy losses."

About LabCorp(R)
Laboratory Corporation of America(R) Holdings, a S&P 500 company, is a pioneer
in commercializing new diagnostic technologies and the first in its industry
to embrace genomic testing.  With annual revenues of $3.6 billion in 2006,
over 25,000 employees nationwide, and more than 220,000 clients, LabCorp
offers clinical assays ranging from routine 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, National Genetics Institute, Inc., ViroMed Laboratories, Inc.,
The Center for Esoteric Testing, DIANON Systems, Inc., US LABS, and Esoterix
and its Colorado Coagulation, Endocrine Sciences, and Cytometry Associates
laboratories.  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, 2006, and subsequent SEC filings.