Endocrine Diagnostic Service

The Endocrine Diagnostic Service at the Auburn University College of Veterinary Medicine was established in the 1970’s as one of the first hormone testing labs in the U.S. catering specifically to veterinarians. The lab established methods to accurately measure a variety of hormones in animals of veterinary importance. Over the years, the lab, in addition to its primary mission of service to veterinarians, has been active in research in development of new and better methods to diagnose and treat endocrine disease. We offer measurement of hormones related to thyroid (Total T4, free T4 by dialysis, canine TSH, thyroglobulin autoantibody), adrenal (cortisol, endogenous ACTH) function. The lab uses the Immulite analyzer and radioimmunoassay methods. Finally, we offer interpretation of results provided by a veterinary endocrinologist and consultation with specialists in internal medicine, dermatology, and theriogenology located in our teaching hospitals.


The Service is closed during Auburn University holidays:

  • Martin Luther King Day
  • Memorial Day
  • Juneteenth
  • July 4th
  • Labor Day
  • Thanksgiving 
  • Christmas through January 1


Phone Hours: Monday through Friday 1:00 p.m. – 4:30 p.m.


We will respond to questions as soon as possible. Also, you may email questions related to the Endocrine Service at cvmendo@auburn.edu.

Endocrine Diagnostic Service
Department of Anatomy, Physiology and Pharmacology
College of Veterinary Medicine
212 Greene Hall
1130 Wire Road
Auburn, AL 36849-5518

Telephone: (334) 844-5400
Fax: (334) 844-5388

Tests Offered

Thyroid: Total T4, Free T4 by dialysis, Canine TSH, Thyroglobulin Autoantibody, Thyroid Profiles (Canine and Feline)

  • Adrenal:  Cortisol (ACTH Response, Dexamethasone Suppression)
  • Other Tests:  Fructosamine

Sample Collection

(red top)
EDTA Plasma
(purple top)
CortisolYesYesShip cold
(if serum)
Free T4YesNo 
Endogenous ACTHNoYesRecommend trasylol (aprotinin)
No hemolysis
Ship cold

Generally, avoid heparin

Endocrine Diagnostic Services originally established methods to accurately measure hormones in animals and currently researches new and better methods to diagnose and treat endocrine disease.



We no longer measure INSULIN, URINE CORTISOL/CREATININE, T3, OR THYROGLOBULIN AUTOANTIBODY (Tgaa), OR FRUCTOSAMINE. Also, we only accept PROGESTERONE samples from horses. Results can be reported to you in 1 of 4 ways: email, fax, phone, or US mail. There is NO CHARGE for your first choice of how you’d like your result reported. Additional choices for results will cost $1.00 each.