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STANDARD & POOR’S RAISES LABCORP® CREDIT RATING TO INVESTMENT GRADE

10 November 2000
Contact:
336-436-4855
Pamela Sherry

Shareholder Direct:
800-LAB-0401
www.labcorp.com

STANDARD & POOR'S RAISES LABCORP(R) CREDIT RATING TO INVESTMENT GRADE

Two Level Upgrade Reflects Solid Operating Performance and Continuing Positive Trends

Burlington, NC, November 10, 2000 -- Laboratory Corporation of America(R) Holdings (LabCorp(R)) (NYSE: LH) announced today that Standard & Poor's has upgraded its corporate credit and bank loan ratings for LabCorp two levels, from BB+ to BBB.

"We are pleased that Standard & Poor's has increased LabCorp's corporate rating to investment-grade," said Thomas P. Mac Mahon, chairman and chief executive officer of LabCorp. "Our strategic plan to leverage LabCorp's national presence with our genomic strategy directly contributed to our achievement of this improved financial ranking."

Laboratory Corporation of America(R) Holdings (LabCorp(R)) is a national clinical laboratory with annual revenues of $1.7 billion in 1999. With 18,000 employees and over 100,000 clients nationwide, the Company offers more than 2,000 clinical tests ranging from simple blood analyses to sophisticated molecular diagnostics. LabCorp leverages its expertise in innovative clinical testing technology with its Centers of Excellence. The Center for Molecular Biology and Pathology, in Research Triangle Park (RTP), North Carolina, develops applications for polymerase chain reaction (PCR) technology and its National Genetics Institute in Los Angeles is an industry leader in developing novel, highly sensitive PCR methods for testing hepatitis C and other infectious agents. Its Center for Occupational Testing in RTP is one of the world's largest substance abuse testing facilities, and the Center for Esoteric Testing in Burlington, North Carolina, performs the largest volume of specialty testing in the network. LabCorp's clients include physicians, state and federal government, managed care organizations, hospitals, clinics, pharmaceutical and Fortune 1000 companies, and other clinical laboratories.

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. 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, 1999 and subsequent SEC filings.