Educational information from Her Form — reviewed for accuracy by our health specialists.
Not a substitute for personal medical advice. Optional 1:1 consults with Robyn, our consulting women's-health specialist, are available on request.
What it is
AMH is released by the small follicles in the ovaries. It reflects the size of the remaining egg pool. Unlike FSH, AMH is stable across the cycle and can be tested on any day.
Why it matters for women
AMH is the gold-standard fertility-planning marker. It guides timing decisions, IVF protocols and egg-freezing conversations. It does not measure egg quality.
Optimal range
Age-dependent. 25–34: 2.0–4.0 ng/mL · 35–39: 1.5–3.0 · 40+: >0.8
Standard lab range
Labs flag <1.0 as 'low' but age context is everything.
When it's high
- ↑PCOS pattern
- ↑High follicle count
When it's low
- ↓Diminished ovarian reserve
- ↓Approaching menopause
- ↓Post-chemo/surgery
References
- ASRM — Ovarian reserve testing guidelines— AMH and antral follicle count as reserve markers
- ESHRE — Diminished ovarian reserve guideline— Clinical relevance of AMH in fertility planning
- RANZCOG — Ovarian reserve in clinical practice— AMH interpretation and fertility counselling
References are provided for educational context only. Always interpret results with a qualified healthcare professional.
A note on interpretation. Ranges above are what our health specialists works to in healthy women. They are not a diagnosis — a single result always needs context from your symptoms, cycle phase and other markers.