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 ...

Researchers proposed using age, sex- and race-specific reference ranges on thyroid function tests to better refine the ...

The earlier in gestation this is done the better, so this testing would be best done by the primary-care physician or endocrinologist ... defined as a verified TSH >5 mU/l, with a normal or ...