Authentidate Holding Corp., together with its subsidiaries, provides various laboratory testing services in the United States. The company operates through two segments, Laboratory Testing Services and Web-Based Software. Its laboratory testing services include the testing of an individual's blood, urine, or saliva for the presence of drugs or chemicals, as well as the patient's DNA profile. The company primarily offers medical toxicology, pharmacogenomics, cancer genetic testing, and molecular biology tests. It also provides Web-based software and related products as Software as a Service for Web-based revenue cycle management applications; and telehealth products and services that enable healthcare organizations to coordinate care for patients, and enhance related administrative and clinical workflows, and compliance with regulatory requirements. In addition, the company offers post contract customer support services. Authentidate Holding Corp. is based in Gainesville, Georgia.