Lab marker · Also: follicle-stimulating hormone

FSH

A pituitary hormone that stimulates ovarian follicles and rises as ovarian reserve declines.

A pituitary hormone that stimulates ovarian follicles and rises as ovarian reserve declines.

Also known as: follicle-stimulating hormone

Follicle-stimulating hormone (FSH) is released by the pituitary gland to stimulate the growth of ovarian follicles. As the ovaries become less responsive during the menopause transition, FSH tends to rise.

A single FSH value can fluctuate, so menopause is diagnosed clinically (12 months without a period) rather than by one lab result alone.

Related terms

LH

A pituitary hormone whose mid-cycle surge triggers ovulation.

AMH

A hormone released by small ovarian follicles that reflects remaining ovarian reserve.

Estradiol

The primary and most potent estrogen produced by the ovaries during the reproductive years.

Perimenopause

The transitional years before menopause when cycles become irregular and symptoms often begin.

Ovarian reserve

An estimate of the quantity of remaining eggs in the ovaries.

Source

MedlinePlus: FSH Levels Test

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