Short answer
AMH, or anti-Mullerian hormone, is often used as one piece of ovarian reserve assessment, especially in fertility treatment planning. It can help estimate likely response to ovarian stimulation, but it does not reliably predict whether a person can get pregnant naturally in the near term.
What AMH can and cannot tell you
| Question | AMH may help with | AMH cannot prove |
|---|---|---|
| Fertility treatment planning | Estimating ovarian response to stimulation. | Embryo quality, sperm factors, uterine factors, or final pregnancy outcome. |
| Ovarian reserve | Providing one marker of remaining follicle pool. | The exact number of eggs left or how long fertility will last. |
| PCOS context | AMH may be higher in some PCOS patterns. | A PCOS diagnosis by itself. |
| Menopause timing curiosity | May trend lower with age. | A precise menopause date. |
ACOG and ASRM both caution that AMH is much more useful for ovarian response and fertility-treatment planning than for predicting natural conception in women without an infertility diagnosis. The result is still only one input, and assay differences matter when comparing numbers across labs or over time.
When AMH is most useful
AMH is most helpful when a fertility clinician needs to estimate how the ovaries may respond to stimulation, choose a treatment plan, or compare ovarian reserve with age, ultrasound, FSH, and estradiol. That is different from using AMH as a stand-alone fertility score for the general public.
What AMH cannot predict
AMH cannot tell you the exact number of eggs remaining, the exact month menopause will start, whether conception will happen naturally this year, or whether pregnancy will occur on a fixed timeline. NICHD and ACOG both caution against using ovarian reserve tests that way.
Before using a direct-to-consumer AMH result
- Ask whether the result should be repeated or interpreted with ultrasound follicle count, FSH, estradiol, history, and age.
- Do not treat a low AMH as proof you cannot get pregnant.
- Do not treat a high AMH as proof fertility is fine.
- Ask whether birth control, pregnancy, ovarian surgery, chemotherapy, or lab method could affect interpretation.
What follow-up may include
Follow-up may include a fertility or gynecology visit, repeat AMH with the same lab method if comparison matters, ultrasound antral follicle count, FSH and estradiol testing, and counseling about whether the result should change treatment planning at all.
FAQ
What does AMH measure?
AMH, or anti-Mullerian hormone, is a blood marker made by ovarian follicles that can help estimate ovarian reserve.
Can AMH predict natural fertility?
No. ACOG says a single AMH level should not be used to predict time to pregnancy in women with presumed fertility.
What is AMH most useful for?
AMH is most useful in fertility care when estimating likely ovarian response to stimulation or helping plan treatment, not as a stand-alone fertility score.
Does a high AMH mean fertility is good?
Not necessarily. A high AMH can happen in PCOS or other patterns and does not prove pregnancy will happen easily.
Does a low AMH mean pregnancy is impossible?
No. A low AMH does not prove that pregnancy cannot happen naturally; it is only one piece of the fertility picture.
Why do labs and doctors talk about assay differences?
ACOG notes that AMH assays vary, so results can differ between methods and should be interpreted with the same lab and the clinical context when possible.
Related guides: FSH and LH tests, estradiol and progesterone tests, prolactin blood test, and DHEA-S test.