Menopause
Postmenopause

In women with or without a uterus, menopause or postmenopause can also be identified by a blood test showing a very high follicle-stimulating hormone level, greater than 25 IU/L in a random blood draw; it rises as ovaries become inactive. FSH continues to rise, as its counterpart estradiol continues to drop for about 2 years after the last menstrual period, after which the levels of each of these hormones stabilize. The stabilization period after the begin of early postmenopause has been estimated to last 3 to 6 years, so early postmenopause lasts altogether about 5 to 8 years, during which hormone withdrawal effects such as hot flashes disappear. Finally, late postmenopause has been defined as the remainder of a woman's lifespan, when reproductive hormones do not change any more.
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