Thyroid function tests are laboratory tests that measure the levels of thyroid hormones triiodothyronine (T3), thyroxine (T4), and thyroid stimulating hormone (TSH) in the blood in order to determine if the thyroid gland is functioning normally. These tests are carried out to screen for and diagnose thyroid disorders like hypothyroidism and hyperthyroidism. The thyroid gland located in the neck...
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