What can an AMH test tell you about fertility?

What does the evidence say about amh testing for fertility?

1. AMH is measured in a blood sample and is often used during fertility evaluation or IVF planning. The hormone reflects the small-follicle population indirectly. The laboratory number is not a direct inventory of eggs and cannot describe the health of each egg. 1
2. ASRM finds AMH useful for anticipating the number of eggs obtained with ovarian stimulation, but much less useful for predicting pregnancy or live birth on its own. Low AMH is not proof that natural conception is impossible, and high AMH does not guarantee pregnancy. 2
3. The value of testing depends on the clinical question. ASRM advises against using ovarian-reserve markers as general fertility screening in people without an indication for infertility evaluation. Ask what decision the result will change before buying repeated tests for reassurance. 3
4. Hormonal contraception can lower measured AMH, and results need interpretation in that context. Do not stop contraception simply to obtain a higher-looking number. Discuss whether a result needs clarification and how any change in testing or contraception fits your pregnancy intentions. 2
5. Laboratories can use different methods, units, and reference intervals. Bring the complete report when comparing results over time. A change in the number deserves interpretation, not an automatic conclusion that a supplement worked or that fertility suddenly disappeared. 4

When is an AMH result useful in fertility planning?

• Before testing, ask what decision the AMH result would help inform.
• When results return, review the units, laboratory, age, and medication context.
• During fertility care, use response to the actual plan alongside laboratory markers.

Questions for your fertility or prenatal team