COVID STATUS UPDATE:   Building reopened to clients.


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Dr. John Schaefer working with his team

While the situation with COVID-19 remains fluid, our diagnostic laboratory services and courier service continue operation and are striving to maintain routine business hours of operation to meet your needs and those of your patients. However, due to limited depth of staffing and health concerns, some laboratories are adjusting schedules on a day-to-day basis. We encourage you to call prior to submitting samples. We will do our best to meet your needs and those of your patients. Please stay safe and well during this crisis.


Haemaphysalis longicornis (Asian longhorned tick) identified for first time in TN
The invasive Asian longhorned tick (Haemaphysalis longicornis) has been identified for the first time in Tennessee. A dog from Union county and cattle from Knox and Roane counties were found to harbor the parasites. Haemaphysalis longicornis is a known vector of significant human and animal pathogens in its home range, but its significance as a vector of disease in the United States requires further investigation. The tick feeds on a wide variety of hosts including humans and many other domestic and wild animals and can expand its population rapidly and establish an infestation parthenogenetically. Ticks were noted by UTCVM pathologists and identified by the parasitology section of the UTCVM diagnostic laboratory, Dr. Rebecca Trout-Fryxell (UTIA medical and veterinary entomologist) and confirmed by the NVSL. Monitoring efforts by UTIA, UTCVM, TWRA and the USDA are ongoing to evaluate the extent of the tick’s range in Tennessee. Ticks may be submitted to the UTCVM diagnostic laboratory for parasite external identification by the parasitology section.
Please visit the Tennessee Department of Agriculture for further details on Haemaphysalis longicornis.

We are excited to announce that the MAT (Modified Agglutination Test) for the detection of anti-Toxoplasma gondii antibody in serum samples has returned to the UT CVM Parasitology lab effective August 1, 2021. We are able to offer this test through collaboration with Dr. Chunlei Su’s laboratory in UT Microbiology.  Download the Toxoplasma TgMAT handout for more information.

Services Provided

The UTCVM Parasitology Laboratory provides several test panels to provide better service and to our clients and their patients while keeping costs reasonable. Below is more information about our fecal and heartworm panels so that you can choose your test wisely.

Parasitology Submission Form

Fecal Testing

  • The small animal fecal panels broaden the spectrum of detection for intestinal parasites. Please see the download for a detailed reference. Fecal Testing

Heartworm Testing

  • Comprehensive heartworm panels improve the sensitivity of heartworm testing with an additional Knott’s test evaluation for the presence of microfilariae. This standard is endorsed by the American Heartworm Society and Companion Animal Parasite Council and provides enhanced quality care for your patients. Heartworm Testing 

Contact Information

Telephone Numbers and Email


  • 8:00 AM- 5:00 PM (EST)
  • Monday – Friday

Shipping Address

  • UTCVM Parasitology Laboratory
  • Biomedical and Diagnostic Sciences
  • 2407 River Drive, Room A233
  • Knoxville, TN 37996-4543