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Thyroid Hormone Tests. Guide. Thyroid hormone tests are blood tests that check how well the thyroid gland is working. The thyroid gland makes hormones that regulate the way the body uses energy. The thyroid gland is a butterfly-shaped gland that lies in front of your windpipe (trachea), just below your voice box (larynx).
A Thyroid Stimulating Hormone (TSH) blood test is combined with the Free T3 and Free T4 tests to provide the most accurate overview of thyroid function. Test also includes T3 Uptake, T4 and T7. Thyroid Stimulating Hormone (TSH) blood test is combined with the Free T3 and Free T4 tests to provide the most accurate overview of thyroid function. Test also includes T3 Uptake, T4 and T7.