A thyroid-stimulating hormone test measures the levels of this hormone in the body. The test helps determine whether or not the thyroid, a small gland in the throat, is functioning correctly. The ...
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) ...
Medically reviewed by Danielle Weiss, MD Low TSH levels may suggest hyperthyroidism, which causes symptoms like weight loss and increased appetite.High TSH levels can be a sign of hypothyroidism, with ...