Quest Diagnostics is the nation’s leading provider of diagnostic testing, information, and services. Our clinical laboratory testing services include: blood tests, body fluid testing, tissue pathology and cytology, health screening and monitoring tests, drug screening and testing as well as gene-based testing (genetic testing). Visit our Patient Health Library to see a list of frequently ordered lab tests and related information, such as patient brochures, and printable lists of questions you can ask your physician.
