Celebrate the Whippet Breed

Normal Thyroid Levels in Whippets

Article by Dr. Adele Monroe, DVM, GraceGift Whippets

I don't know if it's published elsewhere, but Dr. Jean Dodds reported in a seminar I attended in June 1998 that normal thyroid hormone levels for sighthound breeds tend to be lower than the rest of the dog population. When testing thyroid function, always request a test that measures ALL the following values plus TSH (not widely available in 1998).

Her minimal expectations for an adult performance sighthound are:
-- Total T4 at least 1.5 micrograms/dl
-- Free T4 at least 1.0 nanograms/dl
-- (T3 and autoantibody values not given)
-- Total T3 = 100 to 200 nanograms/dl
-- Free T3 = 1.5 to 3 picograms/ml
-- T3 autoantibodies < 2.0 (no units given)

Her minimal expectations for an adult performance sighthound are:
-- Total T4 at least 1.5 micrograms/dl
-- Free T4 at least 1.0 nanograms/dl
-- (T3 and autoantibody values not given)

Different laboratories may report results with different units of concentration, so be sure and check the units, not just the numbers. Since Dr. Dodds was working for Anntech at the time of the seminar, I assume the units are those used by that laboratory.

Dr. Dodds is a veterinary hematologist who has spent decades studying immune-mediated blood disorders and hypothyroidism. She started the first canine blood bank, Hemopet.

On a slightly different note, Dr. Dodds mentioned a study of Bald Thigh Syndrome in racing greyhounds--BTS was NOT associated with hypothyroidism in that study.

Adele C. Monroe, DVM, MSPH
North Carolina, USA
Holistic Health Information for Dogs and Cats Web Site
http://www.gracegift.net
GraceGift Whippets + 1 Rottweiler & 1 Chesapeake Bay Retriever