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Tissue samples from a three-week old, Charolais mix, male intact calf were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for testing. According to the submitting veterinarian, the animal exhibited acute, non-specific neurological deficits that progressed rapidly. No information was provided regarding whether this animal died naturally or by euthanasia. Tests requested by…
The winter season often gets the blame when livestock health begins to dwindle; however cold temperatures are rarely the direct cause of disease. Instead, stress triggered from frigid weather conditions are significant points of concern. As many parts of the south brace for this weekend’s winter weather, it’s critical to consider the potential impact on livestock. When winter…
In addition to testing, TVMDL offers clients various additional services. Click each fee category to view the fees and services. Additional Fees Fee Name Description Price Consultation/Interpretation Fee Interpretation of water samples from the Texas A&M AgriLife Extension Service Soil, Water and Forage Testing Laboratory. $6.00 Digital Slide Scanning Creation of digital slide images at…
The detection of highly pathogenic avian influenza, HPAI, subtype H5N1 in dairy cattle was confirmed in March 2024 by the U.S. Department of Agriculture, USDA. This finding was the first of its kind and shocked the global scientific community. The official confirmation came on the heels of testing performed at the Texas A&M Veterinary Medical…
In this article What is Johne’s disease? Johne’s disease is a chronic, progressive intestinal disease of ruminants caused by the bacterium Mycobacterium avium subspecies paratuberculosis, also known as MAP. The organism infects the small intestine, leading to thickening of the intestinal wall, reduced nutrient absorption, and eventually diarrhea and severe weight loss. The disease typically…
Sample Exclusions and Disclaimers
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…
Nitrate toxicity occurs when animals consume food or water that contains high levels of nitrates. In the rumen, nitrates are converted into a smaller compound called nitrites, which are then absorbed into the bloodstream. Ruminants are particularly susceptible because of their consistent grazing habits. Alexis Thompson, DVM, Ph.D., DACVPM, is the resident director at the…
Download a printable version of this information. The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is committed to assisting horse owners and practitioners in the wake of the current equine herpesvirus type-1 (EHV-1) outbreak by offering timely and accurate diagnostic testing. TVMDL recommends the following practices to ensure testing is completed quickly and accurately. Samples…
Testing for trichomoniasis is performed daily at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). If submitted properly, a sample can be accurately and efficiently tested, and results reported to the submitting veterinarian in a timely manner. All samples must be incubated 48 hrs (36-38°C) prior to rtPCR testing; please plan accordingly. Clearly indicate on…