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Search results for “drug”.

  • Drug Screen – Performance Animals (LC/MS)

    Detection of prohibited substances and permissible therapeutic drugs in livestock show or competition mammalian and avian species using liquid chromatography/mass spectrometry. Quantitation of a positive sample is available for an additional fee.  This test is not available for horses intended for racing, whether in training or competition. 

  • Drug Screen – Unknowns (LC/MS)

    Detection of a variety of drugs in submitted samples. This screen is designed to detect drugs not indicated in other TVMDL Drug Screens. Some of the drugs included in this test are from the following drug classes: Non Steroidal Anti-inflammatory Drugs (NSAIDs) Long-acting Tranquilizers Sedatives Corticosteroids Anabolic Steroids Beta-adrenergic Agonists Local Anesthetics Antihistamines Beta Blockers…

  • Drug testing during the fall livestock show season

    Between the months of August to December, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) performs drug testing on more than 1,000 urine, blood, fecal, and feather samples from approximately 45 different livestock shows and fairs across the country. As officials and volunteers prepare for these events, please remember TVMDL offers the following collection supplies:…

  • Duodenitis/proximal jejunitis (DPJ) in a horse

    A 5-year-old Andalusian stallion was presented for necropsy at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) after being euthanatized due to a history of colic, profuse nasogastric reflux, non-response to treatment, and poor prognosis. Upon opening the abdomen at necropsy, the stomach was found to be severely distended with gas. The duodenum and proximal…

  • Education Library

    TVMDL Education Library TVMDL’s education library offers detailed, real-world cases across various species, covering both common and rare conditions. Each case study includes diagnostic approaches and invaluable insights that may aid practitioners in their in-clinic diagnostic workups. Our educational materials feature up-to-date research and best practices to enhance your knowledge and skills. Whether you’re looking…

  • Failed equine pre-purchase drug screen

    Blood was collected during a routine pre-purchase examination on a horse and submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station for drug testing. Serum was extracted using methyl tert-butyl ether (MTBE) and analyzed by liquid chromatography – tandem mass spectrometry (LC-MS/MS). Romifidine was confirmed in the sample by LC-MS/MS. Romifidine…

  • Itraconazole (LC/MS)

    Measurement of therapeutic levels of itraconazole by liquid chromatography-mass spectrometry. TVMDL offers a peak and trough measurement or a single measurement.

  • Levetiracetam (LC/MS)

    Measurement of therapeutic levels of levetiracetam (Keppra) by liquid chromatography-mass spectrometry. TVMDL offers a peak and trough measurement or a single measurement.

  • Listeriosis in a goat doe

    Samples from a one-year-old Boer goat doe were received at the TVMDL for testing.  The doe had displayed neurological signs including unilateral paresis, droopy lip and hypersalivation, torticollis upon stimulation, obtundation, and lateral recumbency.  The goat was also febrile. Clinical differentials included listeriosis, polioencephalomalacia, bacterial meningitis, and rabies virus. Treatment consisted of antibiotics, anti-inflammatory drugs,…

  • Livestock Show Drug Testing

    The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has been providing drug testing services for livestock shows across the country for more than 30 years. The agency tests in excess of 3,500 samples for more than 90 shows across the United States annually. TVMDL’s drug testing laboratory is an ISO 17025 accredited lab with state-of-the-art…