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Thyroid function test

Thyroid function test

Overview

One way to evaluate the performance of the thyroid is through blood testing. The thyroid function test is a group of common tests used to evaluate how the thyroid is functioning.

Review Date 2/22/2018

Updated by: Brent Wisse, MD, board certified in Metabolism/Endocrinology, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.