The Endocrinology Laboratory is a section within the Animal Health Diagnostic Center (AHDC). The lab provides routine Clinical Testing Services for veterinarians and scientists to improve the health of companion, food and fiber-producing, sporting, wildlife, zoo, and laboratory animals. A broad range of endocrine tests are performed using validated immunoassay technologies and methods including radioimmunoassay, enzyme-linked immunosorbent assay and chemiluminescent immunoassay. In addition, the lab supports researchers at Cornell and in universities throughout the world with our Research Testing Service. This immunoassay service and expertise is also used by toxicological and other contract testing laboratories in the pharmaceutical and life science industries. The quality assurance program initially established in the laboratory used GLP regulations (21 CFR part 58) as guidelines to maintain quality and ensure integrity of the results. The laboratory now follows the quality assurance program established within the AHDC, which meets the requirements for accreditation by the American Association of Veterinary Laboratory Diagnosticians (AAVLD). The Endocrinology Lab is certified by the Orthopedic Foundation for Animals (OFA) to provide testing for the Canine Thyroid Registry. The laboratory participates in proficiency testing administered by the Society for Comparative Endocrinology and Veterinary Laboratories of America. Our staff also provides education and consultation to veterinarians, visiting researchers, and students. The laboratory is a self-sufficient service and research unit within the AHDC and College of Veterinary Medicine, deriving financial support from testing fees, contracts, and research grants.