FSH ( Menopause )

The FSH test measures follicle-stimulating hormone, a key hormone produced by the pituitary gland that regulates reproductive function. In women, FSH stimulates the ovaries to develop eggs and controls the menstrual cycle. In men, it supports sperm production. Measuring FSH levels helps assess fertility, diagnose menopause, and detect hormonal imbalances. No fasting or special preparation is needed.

Who Should Get Tested?

Around 13 million women in the UK are currently perimenopausal or menopausal. FSH testing is recommended if you experience irregular or absent periods, hot flashes, mood swings, night sweats, difficulty conceiving, or unexplained fatigue. In men, symptoms such as low libido, reduced muscle mass, or low sperm count may indicate abnormal FSH levels. FSH testing can also help diagnose PCOS, premature ovarian failure, and pituitary disorders, and is used to evaluate early or delayed puberty in children.

Understanding Your Results

FSH Level	Status
Below 5 IU/L	Pre-menopausal normal reproductive hormone levels.
5 to 10 IU/L	Suggestive of perimenopause hormonal changes may be beginning. Monitor symptoms.
10 to 25 IU/L	Menopausal range consistent with menopausal transition.
Above 25 IU/L	Post-menopausal confirms menopause. Discuss symptom management with your GP.

FSH levels can fluctuate during perimenopause, so a single result should be interpreted alongside your symptoms. Your clinic team will explain your result and recommend any follow-up needed.

Nearest clinics offering this test

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