AMH stands for anti-Müllerian hormone. It is made by the small follicles in the ovaries, so the level gives an estimate of how many eggs remain. It is a common test, and its result is often misread.
What it can tell you
Roughly how your egg reserve compares with other women of your age, and how your ovaries may respond to the medicines used in IVF.
What it cannot tell you
Whether your eggs are healthy, whether you will get pregnant naturally, or when the menopause will come. A low result does not mean you cannot conceive; a high result does not mean you will.
When it is done
On any day of the cycle. Results are usually given in ng/mL or pmol/L; make sure you know which unit your report uses before comparing it with anything you read online.
What affects it
Age most of all; the contraceptive pill can lower it for a time; polycystic ovaries often give a high result.
A result means most when it is read alongside your age, your history and your other results. Ask the doctor who requested it to go through it with you.
This article is general information, not advice about you. Not for emergencies. Call 1990.