Established in 1971, Laboratory Corporation of America Holdings is a publicly traded company that specializes in blood analysis and drug and genomic testing services. The company operates a network of more than 35 primary testing locations and over 1,600 patient service centers in the United States. It offers forensic, ambulatory monitoring, DNA identification and bone marrow services. The company also provides laboratory services that assist in the fields of anatomic pathology, cardiology, dermatology, endocrinology and gastroenterology. Laboratory Corporation of America Holdings conducts clinical trial testing solutions through its Esoterix Clinical Trials Services division. In addition, it operates The Center for Esoteric Testing, National Genetics Institute, ViroMed Laboratories, Litholink Corporation and DIANON Systems. Laboratory Corporation of America Holdings performs approximately 1 million tests on nearly 400,000 samples each day. The company serves hospitals, government agencies, clinical labs, pharmaceutical companies and managed care organizations. As one of the world s largest clinical laboratories, it works in partnership with several community-based organizations, such as the United Way, March of Dimes, American Cancer Society, and Juvenile Diabetes Research Foundation. Laboratory Corporation of America Holdings has annual revenues of more than $4.5 billion.