The thyroid-stimulating hormone (TSH) test measures the amount of TSH in the blood to convey how well a person’s thyroid functions. Normal levels are typically 0.4 to 4.0 milliunits per liter (mU/L) ...
Thyroid level tests, including the TSH test, help doctors diagnose thyroid conditions, including hypothyroidism or hyperthyroidism. Treatment may include hormones or other medications. The thyroid is ...