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Advanced Fertility guide

Ovarian Reserve and AMH Testing

What AMH and antral follicle count can and cannot predict, and how ovarian reserve testing fits into fertility planning.

Specialist-depth overview
10–12 min readUpdated 21 July 2026Evidence-informed patient education

Ovarian reserve tests estimate the remaining pool of recruitable follicles and help plan fertility treatment. They do not directly measure egg quality, guarantee natural fertility or accurately predict the exact age of menopause for an individual.

Age remains the strongest population-level predictor of egg quality and pregnancy potential.
AMH is most useful for predicting ovarian response to stimulation, not whether natural conception is possible this month.
Results should be interpreted with cycle history, ultrasound, medical history and fertility goals.
Original educational diagram for Ovarian Reserve and AMH Testing
Original educational diagram created for this topic. It explains the care pathway visually and is not a diagnostic image.

What AMH measures

Anti-Müllerian hormone is produced by small ovarian follicles. Levels vary between laboratories and can be influenced by factors such as hormonal contraception, ovarian surgery and some medical conditions. A low result does not mean zero eggs, while a high result can occur with PCOS.

Antral follicle count and other tests

Ultrasound antral follicle count provides another estimate of recruitable follicles. Day-specific hormones may be used in some settings. No single test should be interpreted in isolation.

How results guide treatment

In IVF, reserve tests help estimate medication response and the risk of low response or hyperstimulation. They may influence urgency, counselling and protocol choice, but they do not reliably predict embryo chromosome status or live birth on their own.

When testing may mislead

Testing people without a clear clinical question can create unnecessary anxiety. A result should lead to a consultation that explains limitations, realistic options and whether trying naturally, earlier referral or fertility preservation is appropriate.

Questions worth discussing at your consultation

  • What clinical decision will this AMH result change?
  • How does my age alter its meaning?
  • Should the result be repeated or combined with ultrasound?
  • Does this suggest a need for earlier fertility treatment or preservation counselling?
When to seek urgent careOvarian reserve results are not usually an emergency. Seek urgent care for severe pelvic pain, fainting or heavy bleeding, especially after fertility treatment or with a positive pregnancy test.
Medical note: This page is educational and is structured to support a specialist consultation. Diagnosis, investigations and treatment must be individualised. It has not been presented as a substitute for an examination or emergency assessment.