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Is my dog hypothyroid?

Species: Dog
Breed: Bichon Frise
Age: 5-8 years
My bichon is obese. She weighs 35 lbs but is also taller than my other bichon who weighs 10 lbs. My question is that I took to a local vet
and they tested her thyroid. The test came back that she has a low count and needed to be on medicine. That was about 2 years ago. I being the bad pet owner did not continue getting the medicine. I know shame on me.
Anyway I took her recently to another vet and they tested her and it came back normal is that possible. She does not eat anymore food than my other bichon.

Thank You
Kathy


Online vet, Dr. Marie

Dr. Marie replied:

It's possible that the first thryoid reading was actually something called a sick euthyroid. Sometimes if a dog is fighting something else (such as a skin infection, or other illness) the T4 level will be low.

When I get a low T4 level I always confirm that this is hypothyroidism by doing additional tests. I only put a dog on medication if the additional thyroid profile tests confirm that it is necessary.

---This question was asked in our Ask A Vet For Free section.---



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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.