FSH
Rises as the ovaries wind down, which is why it is the number checked for the menopause transition.
A quick visit, under 15 minutesWhat to expect
What do you want to know?
AI-generated. For information only, not medical advice or a diagnosis.
About this test
The pituitary hormone that drives egg and sperm production. Commonly checked in menopause and fertility evaluations, timed to the cycle when tracking.
Cycle and fertility hormones shift through the month and through life. FSH, LH, estradiol, and progesterone are timed to the cycle; prolactin and TSH are checked when cycles change.
FSH, LH, estradiol, and progesterone are timed to the cycle, and the right day depends on the question, so a clinician can advise which day to draw. TSH and prolactin can be drawn any day.
Reading your result
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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