Follicle-Stimulating Hormone (FSH)

A hormone that helps grow eggs for release from the ovaries as part of the menstrual cycle. High levels of FSH may indicate dysfunction in the ovaries and are often used to test for premature ovarian insufficiency. FSH levels at 30 mIU/mL or higher, along with 12 months of no menstruation, generally mean that a woman has reached menopause.