Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.5 and 5.0 milliunits per liter (mU/L). If your TSH level is higher than 5.0 mU/L it suggests an underactive thyroid, or ...

Women with higher-than-normal thyroid-stimulating hormone (TSH) levels before starting in vitro fertilization (IVF) may have fewer eggs available for treatment. But according to new research from ...