Protecting animal and human health through diagnostics. The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is a member of The Texas A&M University System and is composed of two full-service laboratories, located in College Station and Canyon, and two poultry laboratories, located in Center and Gonzales. With its strategic locations, TVMDL is uniquely positioned to serve the animal industries of Texas. TVMDL receives approximately 200,000 accessions and runs an average of 925,000 tests per year. Submissions received in the laboratory originate from Texas, neighboring states, and around the world.