Anti-Müllerian hormone (AMH)
Hormone made by the ovaries or testes; in women a lab indicator of ovarian reserve
Also known as
Definition
Anti-Müllerian hormone (AMH) is made in the follicles of the ovaries in women and in the testes in men. In women of childbearing age, the level roughly reflects how many eggs remain (ovarian reserve). AMH falls with age and is no longer detectable after menopause. On its own, the value says nothing about egg quality or the chance of getting pregnant.
| Parameter | Value |
|---|---|
| Unit | ng/ml or pmol/l |
| Reference Range | Strongly dependent on age and sex; there is no single range for adults. Labs use their own age-specific ranges. The range printed on your report is what counts, and your doctor interprets the result. |
Agree on your personal target range with your doctor.
Conversion: 1 ng/ml corresponds to about 7.14 pmol/l; pmol/l × 0.14 = ng/ml.
↓ What a low value means
A low AMH level in women can be linked to a smaller egg reserve; with increasing age this is a normal course. As menopause approaches, AMH falls, and after menopause it is no longer detectable. In women under 40 with menopausal symptoms, a level that is low for their age can be linked to early loss of ovarian function. The value cannot predict when menopause will start or whether a pregnancy is possible. Discuss the result with your doctor.
↑ What a high value means
A high AMH level in women usually points to a larger number of eggs. It can also be linked to polycystic ovary syndrome (PCOS); AMH alone is not enough for this diagnosis, which needs further results, symptoms and medical history. Certain types of ovarian cancer can also be associated with high levels; there AMH is used to follow the course. Discuss deviations with your doctor.
When to test
Usually as part of a fertility workup or before in vitro fertilization, and additionally when PCOS or early menopause is suspected. No special preparation is needed. In children, AMH is measured for specific questions, such as undescended testicles.
Frequently asked questions
Can the AMH level predict fertility? +
No. AMH roughly shows how many eggs remain, not how healthy they are. Whether and when a pregnancy occurs cannot be derived from the value alone. Your doctor interprets it together with your age and other results.
Does AMH show when menopause will start? +
A falling value can indicate that menopause is approaching. However, the test cannot predict when menopause will occur. If AMH is no longer detectable, this indicates that menopause has been reached.
Do I need to fast for an AMH test? +
According to MedlinePlus, no special preparation is needed. Your practice will tell you whether it has its own requirements, for example because other values are measured from the same blood sample.
Do men have AMH too? +
Yes. In men, the testes make AMH. Before birth it causes the Müllerian ducts to regress, which would otherwise develop into the uterus and fallopian tubes. In boys the level stays high until puberty and then falls.
Anti-Müllerian hormone (AMH)
Last updated: October 05, 2026
This information is for orientation only and does not replace medical advice. Reference ranges can vary by laboratory, method and country.