Receiving a low AMH result is one of the most frightening moments in the pre-IVF workup. It is often received with very little explanation, leaving patients with the impression that IVF is not possible, or that pregnancy is unlikely. The reality is more nuanced than that.

This guide explains what low AMH actually tells you — and what it does not — and what IVF outcomes look like for patients with diminished ovarian reserve.

What AMH Measures

Anti-Müllerian hormone (AMH) is produced by the small antral follicles in the ovaries. It reflects the current size of the resting follicle pool — a reasonable proxy for ovarian reserve. As women age, the follicle pool diminishes and AMH falls.

What AMH tells you:

  • How many eggs you are likely to produce in response to stimulation (expected yield per IVF cycle)
  • Your approximate position on the ovarian ageing curve relative to others your age

What AMH does not tell you:

  • The quality of your eggs
  • Whether IVF will or will not work
  • Whether you can or cannot conceive

A low AMH means fewer eggs per stimulation cycle. It does not determine egg quality — a woman with AMH of 2 pmol/L may produce one egg per cycle, and that egg may be chromosomally normal and lead to a live birth.

For detail on how AMH relates to NHS eligibility criteria, see AMH and IVF eligibility.

What Counts as Low AMH

Reference ranges vary slightly between labs, but broad categories:

| AMH (pmol/L) | Category | |---|---| | >25 | High (normal or above) | | 10–25 | Normal | | 5–10 | Low normal | | 2–5 | Low | | <2 | Very low (severely diminished reserve) |

Some labs report AMH in ng/mL; to convert, divide pmol/L by 7.14.

It is worth noting that AMH varies by lab, can fluctuate between cycles in the same individual, and should always be interpreted alongside the antral follicle count (AFC) — the ultrasound count of small resting follicles, which gives complementary information.

What to Expect in an IVF Cycle with Low AMH

Lower egg numbers. Patients with low AMH produce fewer eggs per stimulated cycle than those with normal reserve. With AMH of 2–5 pmol/L, a typical yield might be 2–5 eggs; with AMH below 2 pmol/L, 0–3 eggs is common. Higher stimulation doses may be used to try to maximise yield, but very low AMH patients often do not respond substantially to higher doses — the follicle pool is simply smaller.

Higher cancellation risk. Cycles where stimulation produces fewer than 3 follicles may be cancelled before egg collection at some clinics, if the expected yield is considered too low to justify the procedure. This policy varies by clinic.

Fewer embryos. Fewer eggs means fewer fertilised eggs and fewer embryos to select from. Patients with low AMH less often have surplus embryos to freeze after a fresh transfer.

More cycles may be needed. With lower yield per cycle, accumulating enough embryos for a good cumulative chance of success may require more than one stimulated cycle — though this depends on individual response.

IVF Success Rates with Low AMH

This is where the picture becomes more encouraging. Multiple studies — including a well-cited analysis from the HFEA database — show that live birth rates per embryo transferred are not substantially different for patients with low AMH compared to those with normal AMH, when age is controlled for.

What this means: a 34-year-old with AMH of 3 pmol/L who produces one good blastocyst has broadly similar chances of that embryo implanting as a 34-year-old with AMH of 20 pmol/L who produces 12 eggs. The disadvantage of low AMH is in the number of embryos available, not in the per-embryo chance of success.

The clinical challenge for low AMH patients is therefore:

  • Accumulating enough eggs/embryos for a reasonable cumulative chance of pregnancy
  • Managing the psychological and financial impact of potentially needing multiple low-yield cycles

For patients in their late thirties or forties with low AMH, the dual problem of low yield and age-related egg quality decline does compound to meaningfully lower cumulative success rates.

Protocol Considerations for Poor Responders

Clinics managing poor ovarian responders (the clinical term for patients who respond minimally to stimulation) have several protocol options:

Higher FSH dose. Increasing the starting dose of stimulation medication (up to the licensed maximum of 450 IU/day) is sometimes tried, though evidence suggests poor responders often don't produce significantly more eggs at higher doses.

Dual stimulation ("DuoStim"). Stimulating twice in the same ovarian cycle — once in the follicular phase and once in the luteal phase — to collect eggs from both stimulations before the next menstrual cycle. Some evidence suggests this can increase total egg numbers per month. Available at specialist centres.

Mild or natural cycle IVF. When only one or two eggs are expected regardless, the cost-saving of natural or mild cycle IVF may be clinically appropriate. See natural and mild IVF.

DHEA or testosterone pre-treatment. Some specialist clinics use DHEA (dehydroepiandrosterone) supplementation for 6–12 weeks before an IVF cycle in poor responders. Some small studies suggest improved response; the evidence is not definitive and DHEA should only be used under specialist supervision. See IVF diet and lifestyle for cautions around DHEA.

Accumulation approach. Banking embryos across multiple mild or natural cycles before attempting a transfer, rather than doing a full stimulated cycle with potentially limited yield.

Donor Eggs as an Alternative

For patients with very low AMH, particularly those who are older and for whom the expected yield per cycle is very low, donor egg IVF is the most efficient path to pregnancy. Donor egg IVF bypasses the ovarian reserve issue entirely, as the donor's eggs are used.

This is a significant decision — involving the question of genetic parenthood and, in the UK, the identifiable-donor framework. See donor egg IVF in the UK for a full discussion.

The timing of this conversation matters: waiting until AMH is extremely low and multiple stimulated cycles have failed before considering donor eggs may reduce the available options. Some patients find it helpful to have this conversation with their consultant early, even if they decide to continue with own-egg attempts first.

Frequently Asked Questions

Q: My AMH is 1.5 pmol/L. Is IVF pointless?

A: No. A very low AMH means fewer eggs per cycle, which reduces the chance per cycle but does not make IVF impossible. Women with AMH below 2 pmol/L have successful IVF pregnancies. The realistic expectation is that more cycles may be needed to produce sufficient embryos, and cumulative success rates depend significantly on age. A specialist consultation to model your realistic expected outcomes is worthwhile before deciding.

Q: Can I increase my AMH?

A: AMH is not reliably increased by any supplementation. Some studies have looked at DHEA and CoQ10 but results are inconsistent. Stopping smoking (which accelerates ovarian ageing) and maintaining a healthy weight can help preserve remaining reserve. Attempting to raise AMH is not a productive primary strategy — the more useful question is how to make the most of the eggs that are present.

Q: Should I try naturally first or go straight to IVF?

A: This depends on age. For a woman under 35 with low AMH but regular ovulation, natural conception is still possible — AMH does not predict natural fertility as strongly as it predicts IVF egg yield. For women over 37 with low AMH, the combination of diminishing reserve and age-related egg quality decline makes earlier IVF intervention more time-efficient.

Q: My clinic said I'm a poor responder. What does that mean for NHS funding?

A: Some ICBs have minimum AMH or AFC thresholds for NHS IVF. If you fall below these thresholds, you may be declined NHS funding. An IFR (Individual Funding Request) or appeal may be appropriate — see how to appeal an NHS IVF refusal.

Q: Does low AMH mean early menopause?

A: Low AMH for your age is associated with a tendency toward earlier menopause, but it is not a guarantee. Many women with low AMH have natural menopause at a normal age. What it does indicate is that the ovarian reserve is at the lower end of normal for your age and may become limiting for IVF sooner than for women with normal reserve.

This article is for information only and does not constitute medical advice. AMH results should be interpreted by a qualified fertility specialist in the context of your full clinical picture.