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  • About Us

    Half a century of service TVMDL encompasses two full-service labs, College Station and Canyon, and two poultry labs, Center and Gonzales. Annually, TVMDL receives over 200,000 accessions and performs over 1 million tests from Texas, neighboring states, and nearly 20 countries around the world.  Tests are performed on many different types of specimens sent or…

  • A dog skin infection caused by bacteria and a novel fungal pathogen, Trichocladium sp

    A nine-year-old female, spayed dog was presented to a veterinarian for diagnosis and treatment of a skin infection. The dog was treated with antibiotic and immunosuppressive drugs to resolve the infection. A punch biopsy sample was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station for bacterial and fungal culture. Bacterial…

  • Agency History

    Serving Texas, and beyond, for nearly six decades At the urging of the Texas livestock industry, legislators created TVMDL during the regular session of the 60th Legislature, in 1967. In 1969, the College Station facility formally opened its doors. Six years later, to better serve the Texas feedlot industry, TVMDL opened the Amarillo facility. In…

  • Antifungal Susceptibility [Referral]

    Determination of the antifungal susceptibility of pure isolates. 

  • Aspergillosis in a Pacific eider

    A four-year-old Pacific eider (sea duck) was reported to have a history of open-mouth breathing. It had been treated for suspected aspergillosis prior to death and was submitted to Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for necropsy. At necropsy, the clinical suspicion of aspergillosis was confirmed. All air sacs were coated by green, velvety,…

  • Bromide (UV/Vis)

    Measurement of bromide ion. This test is useful for therapeutic drug monitoring on animals being treated with potassium or sodium bromide.

  • Collecting Hair for Livestock Show Drug Testing

    The collection of hair samples should be undertaken by a competent individual within a secure, contamination-free facility. Hair is a strong, stable tissue that is simple to collect, transport, and store. Data suggest hair is as effective a matrix as retinal tissue for detecting beta-adrenergic agonist drugs (i.e. clenbuterol, zilpaterol, ractopamine and albuterol). Please note…

  • Cytauxzoon felis infection in two cats

    An outdoor 5-year-old domestic medium hair cat from Gainesville, Texas was presented to a veterinarian for decreased appetite and thirst of one-day duration. The cat had disappeared a few days prior to examination. Freshly prepared blood smears were submitted for a hemoparasite examination at TVMDL. Examination of the blood smear from the cat revealed schizont-laden…

  • Diagnosing Toxic and Nutritional Conditions

    The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) Analytical Chemistry Section has the ability to offer toxicology and drug testing services to livestock producers and practitioners. The lab offers a variety of tests to aid in diagnosing many conditions of both toxic and nutritional origin. Our highly trained and qualified personnel use state-of-the-art analytical techniques…

  • Drug Quantitation (LC/MS)

    Measurement of drugs in samples that have been determined to be positive by other TVMDL tests. Measurement performed by liquid chromatography/mass spectrometry (LC/MS).