• Locations:
  • Amarillo
  • Center
  • College Station
  • Gonzales
  • Contact Us
  • Career Opportunities

Texas A&M Veterinary Medical Diagnostic Laboratory

Translate:

  • Find a Form
  • Deliver a Sample
    • Specimen Collection Information
    • Packaging Samples for Shipment
    • Drop Off a Sample
    • Order Supplies
  • Client Portal
    • Get Test Results
    • SVA Portal
    • Pay a Bill
  • Become a Client
  • Resources
    • Diagnostic Plans
      • Bovine Syndromic Diagnostic Plans
      • Equine Syndromic Diagnostic Plans
    • Education Library
    • Case Study Library
    • Electronic Reporting: QR Coding Process
    • CoreOne Resources
  • About Us
    • Locations and Hours
    • Agency Leadership
    • Speaker’s Bureau
    • TVMDL Mobile app
    • Contact Us
  • Locations
    • College Station Laboratory
    • Amarillo Laboratory
    • Center Laboratory
    • Gonzales Laboratory
  • Contact Us
  • Employment Opportunities

Infectious Coryza in Chickens

November 25, 2019 by Mallory Pfeifer

white chickens in poultry barn

Infectious Coryza in Chickens Martin Ficken, DVM, PhD Six 16-week-old male chickens from a flock of 500 birds were presented for necropsy at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Gonzales. History noted one-week of … [Read more...]

Filed Under: Case Study Tagged With: Gonzales, histopathology, necropsy, pathology, TVMDL

Histopathologic Diagnosis of Feline Herpesvirus

November 5, 2019 by Mallory Pfeifer

Histopathologic Diagnosis of Feline Herpesvirus Erin Edwards, DVM, MS, DACVP and Jay Hoffman, DVM, PhD, DACVP Feline herpesvirus is a highly transmissible, viral disease that is very common in cats. This disease is also known as feline viral … [Read more...]

Filed Under: Case Study Tagged With: cat, college station, feline, histopathology, pathology, TVMDL

Possible Wilted Maple Poisoning in Mare

November 1, 2019 by Mallory Pfeifer

Three brown horses standing at a fence

Possible Wilted Maple Poisoning in Mare Cat Barr, PhD, DABT A 7-year-old pastured mare suffered an acute onset of hemolytic anemia and hematuria. The blood drawn for analysis was hemolyzed and dark. The mare died about three hours after … [Read more...]

Filed Under: Case Study Tagged With: analytical chemistry, college station, equine, horse, mare, toxicology, toxin, TVMDL

Canine Coccidiosis

October 21, 2019 by Mallory Pfeifer

Canine Coccidiosis Jai Guha, Mindy Borst, LVT, and Julie Piccione, DVM, MS, DACVP An 11-year-old Corgi mix was presented to the veterinarian with intermittent diarrhea and inappetence. History noted the dog had clinical signs of gastrointestinal … [Read more...]

Filed Under: Case Study Tagged With: canine, clinical pathology, college station, dog, parasitology, TVMDL

“Hardware Disease” in Backyard Chickens

October 14, 2019 by Mallory Pfeifer

“Hardware Disease” in Backyard Chickens Martin Ficken, DVM, PhD “Hardware disease” in backyard chickens and other birds is caused by the ingestion of metal objects present in their environment. These objects range from sharp objects that … [Read more...]

Filed Under: Case Study Tagged With: Avian, chickens, Gonzales, hardware, necropsy, pathology, poultry, TVMDL

Drug Testing During the Fall Livestock Show Season

October 1, 2019 by Mallory Pfeifer

young boy leading show calf

Drug Testing During the Fall Livestock Show Season Travis Mays, MS, PhD 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 … [Read more...]

Filed Under: Case Study Tagged With: analytical chemistry, Avian, bovine, caprine, college station, drug testing, equine, ovine, porcine, TVMDL

Ehrlichia canis discovered in dog

October 1, 2019 by Mallory Pfeifer

Ehrlichia canis discovered in dog Julie Piccione, DVM, MS, DACVP, Pam Ferro, MS, PhD, and Megan Schroeder, PhD A 7-year-old, neutered Labrador Retriever was presented to their veterinarian for acute onset of lethargy, inappetence, and epistaxis. … [Read more...]

Filed Under: Case Study Tagged With: canine, college station, cytology, dog, pathology, TVMDL

Contagious Ecthyma Diagnosed in a Young Goat

September 19, 2019 by Mallory Pfeifer

Contagious Ecthyma Diagnosed in a Young Goat Erin Edwards, DVM, MS, DACVP, Andrés de la Concha-Bermejillo, DVM, PhD, Pam Ferro, MS, PhD The body of a 3-month-old goat was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory … [Read more...]

Filed Under: Case Study Tagged With: caprine, college station, histopathology, Molecular Diagnostics, pathology, TVMDL, Virology

Bovine Abortion Caused by Leptospira spp.

September 19, 2019 by Mallory Pfeifer

Bovine Abortion Caused by Leptospira spp. Guy Sheppard, DVM, Gabriel Gomez, DVM, PhD, Pam Ferro, MS, PhD, and Megan Schroeder, PhD Tissue from a cross-bred bovine fetus in the third trimester of gestation was submitted to the Texas A&M … [Read more...]

Filed Under: Case Study Tagged With: abortion, bovine, cattle, college station, hisopathology, pathology, TVMDL, Virology

Coccidiosis in Broiler Breeders

September 13, 2019 by Mallory Pfeifer

white chickens in poultry barn

Coccidiosis in Broiler Breeders By Gabriel Senties-Cue, MVZ, EPAA, MS, TVMDL Center Resident Director Severe coccidiosis was diagnosed in a 22-week-old, broiler breeder flock. Three dead birds were submitted to the Texas A&M Veterinary … [Read more...]

Filed Under: Case Study Tagged With: Avian, center, histopathology, necropsy, poultry, TVMDL

Diagnosing Feline Heartworms

September 13, 2019 by Mallory Pfeifer

Diagnosing Feline Heartworms By Melanie T. Landis, DVM, MBA, TVMDL Microbiology Veterinary Diagnostician We are all familiar with the saying that “cats are not small dogs”.  This is true when it comes to feline heartworm disease. While dogs are … [Read more...]

Filed Under: Case Study, DX Guidance Tagged With: canine, college station, feline, heart worm, microbiology, serology, TVMDL

Possible Eprinomectin toxicity in a calf

August 30, 2019 by Mallory Pfeifer

Possible Eprinomectin toxicity in a calf Travis May, MS, PhD A two-month-old, 150-pound, Brahman-cross heifer calf was observed with neurologic signs following application of what was believed to be a permethrin-based insecticide. The calf died … [Read more...]

Filed Under: Case Study Tagged With: analytical chemistry, bovine, cattle, college station, toxicology, TVMDL

Atypical Mycobacteriosis in a Cat

August 30, 2019 by Mallory Pfeifer

Atypical Mycobacteriosis in a Cat Erin Edwards, DVM, MS, DACVP Skin samples from a 9-year-old Siamese cat were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station. This cat was reported to clinically … [Read more...]

Filed Under: Case Study Tagged With: cat, college station, feline, histopathology, pathology, TVMDL

Mitigating the Risk of Mosquitos: EEE, WEE, and WNV Diagnostic Guidance

August 20, 2019 by Mallory Pfeifer

gray dappled horse in field at sunset

Each summer, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) confirms several cases of Eastern Equine Encephalitis (EEE) and West Nile Virus (WNV) in horse populations across the state. Mosquitos play a vital role in the … [Read more...]

Filed Under: DX Guidance, News Tagged With: college station, equine, horse, mosquito, summer, TVMDL

Mammary sarcoma diagnosed in a Chihuahua

August 19, 2019 by Mallory Pfeifer

Mammary sarcoma diagnosed in a Chihuahua Gabriel Gomez DVM, PhD and Cheryl Maguire, DVM A nine-year-old, intact female, Chihuahua dog presented to their veterinarian for a solitary mass on the caudal most left mammary gland.  The mass was excised … [Read more...]

Filed Under: Case Study Tagged With: canine, college station, dog, histopathology, pathology, TVMDL

Diagnostic Guidance: Fowl Pox

August 19, 2019 by Mallory Pfeifer

white chickens in poultry barn

Diagnostic Guidance: Fowl Pox By Martin Ficken, DVM, PhD  Fowl pox is caused by a DNA virus (fowl pox virus).  Many species of birds have their own specific pox virus. Infection can occur in two different forms: dry and wet. Dry pox occurs … [Read more...]

Filed Under: Case Study Tagged With: Avian, fowl, Gonzales, poultry, poultry diagnostics, TVMDL, Virology, virus

Helman and Monday Present at 2019 Bovine Respiratory Disease Symposium and Summer Academy of Veterinary Consultants Meeting

August 13, 2019 by Mallory Pfeifer

Dr. Gayman Helman, Amarillo Resident Director, and Dr. Jessie Monday, veterinary diagnostician, recently attended the 2019 Bovine Respiratory Disease Symposium and the summer Academy of Veterinary Consultants (AVC) meetings in Denver, Colorado. The … [Read more...]

Filed Under: News, Research & Publications Tagged With: bovine, cattle, Denver, Helman, Monday, presentation, TVMDL, TVMDL Amarillo

MSMA (monosodium methyl arsenate) is Not for Pasture Use

August 9, 2019 by Mallory Pfeifer

MSMA (monosodium methyl arsenate) is Not for Pasture Use Cat Barr, PhD A cattle owner in eastern Texas noticed several of the 50 weaned calves in his coastal pasture had diarrhea and didn’t seem to want to eat. The pasture had been sprayed with … [Read more...]

Filed Under: Case Study Tagged With: analytic chemistry, bovine, cattle, college station, toxicology, TVMDL

A case of Coccidioidomycosis in a Llama (Lama glama)

August 9, 2019 by Mallory Pfeifer

One isolated llama in the Altiplano

A case of Coccidioidomycosis in a Llama (Lama glama) Owais A. Khan DVM PhD DACVM, Will P. Sims DVM, and Gayman R. Helman DVM PhD A variety of fresh and fixed tissues, including lung, liver, kidney, spleen, and mesenteric lymph nodes, from a … [Read more...]

Filed Under: Case Study Tagged With: Amarillo, bacteriology, camelid, exotic, histopathology, llama, necropsy, pathology, respiratory, TVMDL

Gangrenous dermatitis discovered in separate broiler flocks

August 5, 2019 by Mallory Pfeifer

white chickens in poultry barn

Gangrenous dermatitis discovered in separate broiler flocks Gabriel Senties-Cue, MVZ, EPAA, MS Recently, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Center diagnosed gangrenous dermatitis (GD) in three flocks of broilers … [Read more...]

Filed Under: Case Study Tagged With: Avian, broiler, center, histopathology, necropsy, pathology, poultry, TVMDL

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

August 5, 2019 by Mallory Pfeifer

A dog skin infection caused by bacteria and a novel fungal pathogen, Trichocladium sp. Narayan Paul, DVM, MS, PhD, Amy Swinford, DVM, MS, DACVM, and Julie Piccione, DVM, MS, DACVP A nine-year-old female, spayed dog was presented to a … [Read more...]

Filed Under: Case Study Tagged With: bacteriology, canine, college station, dog, mrsp, TVMDL

Epizootic hemorrhagic disease (EHD) in White-Tailed deer

July 29, 2019 by Mallory Pfeifer

Figure 1. Gross photograph showing ulceration of the mucosa of the dorsal aspect of the tongue in the white-tailed deer infected with epizootic hemorrhagic disease virus (EHDV).

Epizootic hemorrhagic disease (EHD) in White-Tailed deer By Andrés de la Concha-Bermejillo, DVM, MS, PhD, Pamela Ferro, MS, PhD, and Megan Schroeder, PhD, and Brooke Kehlenbrink* *Fourth year veterinary student Food Animal Track TVMDL … [Read more...]

Filed Under: Case Study Tagged With: cervid, college station, deer, histopathology, Molecular Diagnostics, necropsy, pathology, TVMDL, wildlife

Anthrax in Horses: Disease Considerations and Insight

July 29, 2019 by Mallory Pfeifer

Bacillus anthracis, gram-positive spore forming bacteria which cause anthrax and are used as biological weapon, 3D illustration

Anthrax in Horses: Disease Considerations and Insight Guy Sheppard, DVM and Melanie Landis, DVM Bacillus anthracis is a spore-forming, facultative anaerobic, gram positive rod that is the causative agent of anthrax.  Spore formation occurs when … [Read more...]

Filed Under: Case Study Tagged With: anthrax, bacteria, bacteriology, college station, equine, horses, TVMDL

Anthrax increase in Texas: Texas A&M Veterinary Medical Diagnostic Lab helps identify, track high-consequence diseases in animals

July 19, 2019 by Mallory Pfeifer

The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) plays a vital role in animal disease surveillance efforts, including anthrax. On average, TVMDL diagnoses two to three positive cases of anthrax annually in summer months. Thus far in … [Read more...]

Filed Under: News Tagged With: Amarillo, anthrax, bacteria, bacteriology, college station, testing, TVMDL, zoonotic

Equine Juvenile Ossifying Fibroma

July 18, 2019 by Mallory Pfeifer

Equine Juvenile Ossifying Fibroma Will Sims, DVM A two-year-old, male, intact Miniature Donkey had a wound on the mandible that was associated with a large firm mass. Radiographs of the lesion showed large osseous spicules emanating from the … [Read more...]

Filed Under: Case Study Tagged With: Amarillo, equine, histopathology, horse, pathology, TVMDL

  • 1
  • 2
  • 3
  • …
  • 12
  • Next Page »

Latest News

  • Diagnostic Guidance: E. coli Toxin Typing in Ruminants December 9, 2019
  • New eACTH Test Added to TVMDL Catalog December 2, 2019
  • Optimizing Your Veterinary Diagnostic Laboratory Submission November 25, 2019
  • Infectious Coryza in Chickens November 25, 2019
  • TVMDL professionals participate in AAVLD Meeting November 19, 2019
  • Diagnostic Guidance: Equine Pre-Purchase Drug Screen November 18, 2019

For Employees

  • Employee Email
  • Employment Opportunities
  • TVMDL Rules & Procedures
  • Emergency Alert Systems
  • AgriLife People Directory
  • AgriLife Administrative Services
  • TAMUS Single Sign On
  • Facebook

State of Texas

  • Texas.gov Portal
  • Texas Veterans Portal
  • Statewide Search
  • Texas Homeland Security
  • Risk, Fraud, & Misconduct Hotline

Sign up for our species-specific newsletters!

Sign up for our species-specific newsletters!
USDA NAHLN Core Lab AAVLD accredited ISO 17025 Accredited Lab, certificate 3567.01
  • Texas A&M AgriLife
  • Texas A&M Veterinary Medical Diagnostics Laboratory
  • Texas A&M Forest Service
  • Texas A&M AgriLife Extension Service
  • Texas A&M AgriLife Research

483 Agronomy Rd
College Station, TX 77840