A hormone released by small ovarian follicles, used as a clue to ovarian reserve.
Why it matters for PCOS
Anti-Mullerian hormone (AMH) is made by the small growing follicles in the ovaries, so its level gives one clue about follicle number and ovarian reserve. In PCOS the ovaries often hold many small follicles, so AMH tends to be higher than usual. For this reason AMH is sometimes used to support a PCOS assessment, but it is still not a standalone diagnostic test.
A high AMH alone does not confirm PCOS, and it does not measure egg quality. A doctor interprets AMH alongside symptoms, cycle pattern, other hormone tests, and sometimes ultrasound findings before making decisions.
This glossary is education, not diagnosis. For your own situation, ask a doctor or pharmacist.