AMH Test Report: What Your Egg Reserve Number Can and Cannot Say
The short answer: AMH estimates how many eggs are left in the ovaries, not how good they are, so a low number doesn’t mean you can’t get pregnant naturally and a high number doesn’t mean you’ll conceive easily; it mainly helps doctors plan fertility treatment and spot PCOS patterns.
What AMH can and cannot say
- Can say: roughly how big your remaining egg supply is, compared with women your age.
- Can help: plan IVF, hint at PCOS, and add a clue about approaching menopause.
- Cannot say: whether you’ll get pregnant this year, or how healthy your eggs are.
- Units: ng/mL or pmol/L (1 ng/mL is about 7.14 pmol/L).
Prefer to listen? This post as a 2 min video · Watch the video
“Your AMH is low.” Three words. Many women hear a door slamming shut. Then the aunties hear it second-hand, and within a week the whole family is talking about “time running out” as if a lab number were a calendar. Here’s what sits behind that number. It’s one clue, not a forecast. It’s part of our Lab Reports Decoded series, where the report is explained and the verdict stays with your doctor.
What AMH measures, explained simply
A girl is born with all the eggs she’ll ever have, stored in tiny sacs called follicles. Every month, a group of follicles wakes up. Most fade. Usually one releases an egg. The small growing follicles make a hormone called anti-Müllerian hormone, or AMH.
Think of a wheat store. You can’t count every grain, but you can count the sacks being opened this month, and more sacks opening usually means a fuller store behind them. AMH counts those opening sacks. It says nothing about whether each grain will sprout. That’s egg quality. Age rules it.
How to read the report
An AMH report is short: the test, your value, the unit and a reference range, sometimes split by age. Typical lab ranges, which vary by lab and by testing kit; use the range printed on your report.
| Broad zone | What doctors often consider |
|---|---|
| Low for age | Fewer eggs in reserve; IVF may collect fewer eggs |
| Within the age band | Expected reserve for your age |
| High for age | Many small follicles; PCOS is one common reason |
As a rough guide, many clinics treat values under about 1 ng/mL (roughly 7 pmol/L) as low for a woman in her early thirties, and values well above the age band as high. AMH naturally drops with age, falling towards undetectable around menopause. A number that’s “low” at 25 may be ordinary at 42, which is why the age bands matter so much.
Did you know? Unlike most female hormones, AMH barely changes across the monthly cycle, so the test can usually be done on any day.
Why AMH is high or low
Reasons for a high value
PCOS, classically. Women with PCOS tend to have many small follicles sitting in the ovary at once, each one making its own little share of AMH, so the total on the report runs high even when periods are scanty. A high AMH isn’t a PCOS diagnosis by itself, though; diagnosis rests on periods, signs of raised male hormones and the ultrasound. Our PCOS vs PCOD guide explains those rules. Youth does too.
Reasons for a low value
- Age: the main driver, especially after 35.
- Ovarian surgery: removing cysts, especially endometriomas (chocolate cysts), can lower it.
- Chemotherapy or pelvic radiation.
- Smoking: linked with faster egg loss.
- Early ovarian ageing (POI): when combined with missed periods and high FSH before 40.
- Hormonal birth control: can lower the reading for a while; the level usually recovers after stopping, so tell the lab if you use it.
AMH counts the eggs in the store, not how well they’ll grow.
Myth: a low AMH means you can’t get pregnant naturally
The big one. You need only one good egg a month, and women with low AMH who ovulate regularly often conceive naturally, sometimes long before the IVF appointment they’d booked in a panic. Age predicts natural pregnancy far better than AMH does, because age tracks egg quality. The flip side holds too. A high AMH at 40 doesn’t turn back the clock.
So why use AMH at all? IVF. It helps the doctor guess how the ovaries will respond to stimulation and choose a safer plan, avoiding over-response in high-AMH women.
Should a woman get an AMH test “just to check”?
Many doctors don’t advise it for women who aren’t trying to conceive, because a low number can cause worry without changing anything useful. It makes sense when a couple has been trying for 12 months (6 months if the woman is 35 or older), before IVF, after ovarian surgery or cancer care, or when periods have become irregular at a young age. If periods are thinning out before 40, our early menopause guide lists the tests that belong alongside AMH.
How to prepare for the AMH test
- No fasting is needed. Eat and drink as usual.
- Any cycle day usually works; follow your clinic if they want it paired with a day 2 to 5 FSH test.
- Tell the lab if you take the pill, use a hormonal coil or implant, or are pregnant or breastfeeding.
- Use one lab.
- Bring the printed report, not a phone photo, to the doctor, so the unit and range are clear.
AMH is never a reason for panic decisions. See a gynaecologist promptly if periods stop for 3 months or more (and pregnancy is ruled out), if they stop before 40, or if hot flushes and night sweats start early. Seek help the same day for severe one-sided pelvic pain, fever with pelvic pain, or heavy bleeding soaking a pad an hour. Your doctor interprets the result and decides any treatment; don’t buy supplements promising to “raise AMH”.
AMH test questions women ask
What is a normal AMH level by age?
AMH falls with age, so labs print age bands; many clinics consider under about 1 ng/mL low for a woman in her early thirties. Use the band on your own report.
Can a woman get pregnant with low AMH?
Yes. If ovulation is regular, low AMH women often conceive naturally. Quantity, not quality.
Does high AMH mean PCOS?
Not by itself: high AMH is common in PCOS, but diagnosis needs irregular periods, raised male hormone signs or the ultrasound pattern.
Can AMH be increased naturally?
No food or remedy reliably raises the egg reserve. Stopping smoking and a healthy weight protect overall fertility, and some lifestyle changes may shift the reading slightly, but they don’t add eggs.
Which day of the period is the AMH test done?
Any day in most cases, because AMH changes little across the cycle. Clinics sometimes schedule it on day 2 to 5 alongside FSH.
Does the pill affect the AMH result?
Hormonal contraception can lower the number for a while; tell the doctor, who may retest a few months after stopping if it matters.
What does very low or undetectable AMH mean?
It suggests a small egg reserve and, with other signs, may point to approaching menopause; it still doesn’t make natural pregnancy impossible, so a specialist talk is the next step.
Does AMH predict when menopause will come?
It gives a rough hint only. It can’t give a reliable date for any one woman.
Is the AMH test useful for unmarried women?
Doctors order it when there’s a reason, such as irregular periods, PCOS signs, before ovarian surgery or egg freezing; as a routine “check” it often causes worry without guidance.
Why did the AMH result change between two labs?
Labs use different testing kits, and results aren’t fully interchangeable. Compare repeat tests from the same lab whenever you can.