Texas A&M Veterinary Medical Diagnostic Laboratory

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Reports and invoices may be delayed due to a LIMS software issue. We are actively working with the vendor to get a fix in place.

Starting April 29, the USDA requires lactating dairy cows to be tested for HPAI prior to movement.
View TVMDL’s guidelines to mitigate potential delays when submitting dairy samples for movement testing.

Case Study

Serology Testing in Non-Commercial Birds from Texas, 2019-2024

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Serology Testing in Non-Commercial Birds from Texas, 2019-2024 Carlos Rodriguez, Epidemiology and Informatics Manager  In addition to managing two of the state’s poultry health programs, TVMDL helps keep Texas’ birds healthy through dedicated … [Read more...] about Serology Testing in Non-Commercial Birds from Texas, 2019-2024

The threat of canine herpesvirus to pregnant bitches and neonate puppies

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The threat of canine herpesvirus to pregnant bitches and neonate puppies Mathias Martins, D.V.M, M.Sc., Ph.D. Canine herpesvirus (CHV), or Varicellovirus canidalpha1, belongs to the subfamily Alphaherpesvirinae within the Herpesviridae family. This … [Read more...] about The threat of canine herpesvirus to pregnant bitches and neonate puppies

Summary of Calf Diarrhea Multiplex Results from Texas Cattle, 2019-2023

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Summary of Calf Diarrhea Multiplex Results from Texas Cattle, 2019-2023 Carlos Rodriguez, Epidemiology and Informatics Manager The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) offers a variety of testing to assist in working up … [Read more...] about Summary of Calf Diarrhea Multiplex Results from Texas Cattle, 2019-2023

Determining the cause of diarrhea in pre-weaning calves

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Determining the cause of diarrhea in pre-weaning calves Alexis Thompson, DVM, PhD Pre-weaning calf diarrhea is a common concern in the beef and dairy industry and the cause may be difficult to determine. This is due to the multifactorial nature … [Read more...] about Determining the cause of diarrhea in pre-weaning calves

Historical overview of anthrax in Texas’ livestock population (1974-2022)

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Historical overview of anthrax in Texas’ livestock population (1974-2022) Narayan Paul, DVM, MS, PhD, ACVM Anthrax is caused by a gram positive, rod-shaped bacteria called Bacillus anthracis. This is a spore forming bacteria that can persist in … [Read more...] about Historical overview of anthrax in Texas’ livestock population (1974-2022)

Neurologic Disease due to Bovine Herpesvirus-5 (BHV-5) Infection in a 3-week-old Charolais mix calf

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Neurologic Disease due to Bovine Herpesvirus-5 (BHV-5) Infection in a 3-week-old Charolais mix calf Kiana Jessie, BS, HT (ASCP); Pam Ferro, MS, PhD; Gabriel Gomez, DVM, PhD, DACVP Tissue samples from a three-week old, Charolais mix, male intact … [Read more...] about Neurologic Disease due to Bovine Herpesvirus-5 (BHV-5) Infection in a 3-week-old Charolais mix calf

Rare case of ocular onchocerciasis in a dog from south Texas

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Rare case of ocular onchocerciasis in a dog from south Texas Erin Edwards, DVM, MS, DACVP and Mindy Borst, LVT A formalin-fixed globe from an 11-year-old, castrated male, Pitbull dog was submitted to the Texas A&M Veterinary Medical Diagnostic … [Read more...] about Rare case of ocular onchocerciasis in a dog from south Texas

Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds

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Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds Martin Ficken, DVM, PhD, ACPV Nematodes of the genus Baylisascaris are recognized as causes of avian cerebral nematodiasis. Baylisascaris columnaris, the ascarid of skunks and … [Read more...] about Cerebrospinal Nematodiasis (Visceral Larval Migrans) in Birds

Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes

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Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes Erin Edwards, DVM, MS, DACVP A 1.5-year-old, captive, white-tailed deer buck was submitted to TVMDL for necropsy. The animal had a prolonged history of illness for at least 4 … [Read more...] about Endocarditis in a White-Tailed Deer Caused by Trueperella pyogenes

Detection of Neospora caninum DNA in a mummified bovine fetus

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Detection of Neospora caninum DNA in a mummified bovine fetus Andrés de la Concha-Bermejillo, DVM, MS, PhD, Pam Ferro, PhD, Megan Schroeder, PhD The body of a midterm bovine fetus and the attached placenta were submitted to the Texas A&M … [Read more...] about Detection of Neospora caninum DNA in a mummified bovine fetus

Osteogenesis and dentinogenesis imperfecta in a calf

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Osteogenesis and Dentinogenesis Imperfecta in a Calf Randi Gold VMD, PhD, DACVP and Guy Sheppard DVM A 21 day-old calf with a history of multiple leg fractures and no evidence of external injuries was euthanized and sent into the TVMDL for … [Read more...] about Osteogenesis and dentinogenesis imperfecta in a calf

Analytical chemistry research testing capabilities

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Analytical chemistry research testing capabilities Travis Mays, MS, PhD The analytical chemistry section at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is equipped with instrumentation, including eight mass spectrometers, … [Read more...] about Analytical chemistry research testing capabilities