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A member asked:
What is the definition or description of: free t3 (liothyronine)?
A doctor has provided 1 answer
Thyroid hormone: Thyroid hormone exists in 2 states T4 and T3 (liothyronine) ( they differ in how many iodine molecules are bound to the thyroid hormone chemical structure, with T4 having 4 and T3 (liothyronine) having 3 iodine molecules) ordinarily the thyroid hormones float in the blood either chemically attached to a protein ( protein- bound) or not ( free) so free T3 (liothyronine) is the amount of T3 (liothyronine) hormone in the blood not stuck to protein).
Answered 1/5/2017
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