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A member asked:
Is there a fifferences between testing a tsh, t3, (liothyronine) and t4? what kind of test is a tsh?
A doctor has provided 1 answer
Thyroid tests: The TSH (thyroid simulating hormone) is the most important test of your thyroid function. It's the pituitary/brain signal to your thyroid to make more thyroid hormones t3 (liothyronine) (tri-iodothyronine) and T4 (thyroxine). Elevated TSH means low thyroid function. Unmeasurable/very low TSH means too active thyroid. T3 (liothyronine) is short acting. T4 (thyroxine) is longer lived, usually given for thyroid replacement.
Answered 1/15/2015
4.6k views
Related Questions
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