Laboratory Corporation of America Holdings operates as an independent clinical laboratory company in the United States. The company offers a range of testing services used by the medical profession in routine testing, patient diagnosis, and in the monitoring and treatment of disease, as well as specialty testing services. Its routine tests include blood chemistry analyses, urinalyses, blood cell counts, thyroid tests, Pap tests, HIV tests, microbiology cultures and procedures, and alcohol and other substance-abuse tests.

Acquired Companies: Genzyme Genetics, Monogram Biosciences, Inc.