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Rises as the ovaries wind down, which is why it is the number checked for the menopause transition.
A quick lab visitAI-generated. For information only, not medical advice or a diagnosis.
FSH is the pituitary signal that drives egg development in the ovary and sperm production in the testes. It rises early in the cycle to recruit a follicle, and it rises for good as the ovaries wind down in the menopause transition.
For cycle questions the draw is timed to the cycle, and a clinician can advise the day; for menopause questions a persistently high level is the pattern looked for. Hormonal birth control suppresses it, which is why timing and medication history are read with the number.
FSH rises as the ovaries produce less estrogen, which is the menopause transition, and it swings widely in perimenopause, so one high value is not the whole story. Hormonal birth control and pregnancy suppress it.
In men it rises when the testes underproduce. It is read with LH and estradiol, on a known cycle day where relevant, and a single high value in someone still having periods is usually repeated before it is called menopause.
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No. Tell us what you want tested, and a licensed clinician in your state reviews your order. When it’s appropriate, they sign a lab order that works at any of the listed locations for this test.
Everywhere lab tests are informational and don’t diagnose conditions on their own. Available to adults 18 and older; test availability varies by lab location. Talk with your care team about what your results mean for you. Orders are reviewed and, when appropriate, signed by a licensed clinician in your state. If a test isn’t approved, you receive a full refund. All testing is performed at CLIA-certified laboratories. Your results are private and protected. Everywhere is not for emergencies: if you think you may be having a medical emergency, call 911 or go to the nearest emergency room.