Diagnostic testing for canine hypothyroidism may seem complicated, confusing and frustrating. Different tests are available to evaluate thyroid performance in dogs, including triiodothyronine (T3), total thyroxine (TT4), free T4 (fT4), and thyroid stimulating hormone (cTSH). The decision as to which test(s) to perform along with proper test interpretation is crucial when evaluating thyroid status and accurately determining hypothyroidism in affected dogs.

• Upon completion, participants will understand the pituitary-thyroid hormonal axis and relevant thyroid-related hormones.
• Upon completion, participants will be able to identify common physical signs and laboratory findings present in dog with clinical hypothyroidism.
• Upon completion, participants will understand the uses of thyroxine (total T4), free T4, and thyroid stimulating hormone (cTSH) blood testing to aid in evaluation of thyroid function.
• Upon completion, participants will understand differences between currently available testing assays for thyroid hormone determinations.
• Upon completion, participants will understand how multiple thyroid tests are best used to both establish the diagnosis and monitor therapy in hypothyroid dogs.