Women's FSH levels normally vary throughout the menstrual cycle and are highest just before release of an egg (ovulation). Men's FSH levels normally stay at a constant level. An abnormally high or low level of FSH is often a sign of an inability to produce eggs or sperm.
|Primary Medical Reviewer||Sarah Marshall, MD - Family Medicine|
|Specialist Medical Reviewer||Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology|
|Last Revised||December 7, 2011|
WebMD Medical Reference from Healthwise