The number that made you Google
If you're reading this, you probably got an AMH result back and it either freaked you out or confused you. Maybe both. It's a single number with no context, no "normal" range that makes sense at a glance, and the internet has a lot of loud opinions about what it means.
Here's what AMH actually is, what your number actually tells you, and — more importantly — what it doesn't tell you. Because a lot of what people assume about AMH is wrong.
What AMH actually measures
AMH stands for anti-Müllerian hormone. It's produced by the small follicles in your ovaries — the ones that haven't started growing yet but are sitting there, waiting their turn. Think of your ovaries as a warehouse with a fixed number of boxes. AMH is a rough measure of how many boxes are still on the shelf.
The key word is rough. AMH is a quantity signal, not a quality signal. It tells a reproductive endocrinologist roughly how many eggs you have left. It tells them almost nothing about whether those eggs are good ones.
That distinction matters. A 42-year-old with "normal for her age" AMH still has 42-year-old eggs. A 28-year-old with low AMH still has 28-year-old eggs. Age is the single biggest predictor of egg quality — not AMH. We'll come back to this.
AMH levels by age: the numbers
There is no single "normal" AMH. The normal range drops every year, so you can only read your number against people your age. These ranges come from the Society for Reproductive Endocrinology and Infertility and published AMH reference data:
| Age | Low AMH | Average AMH | High AMH |
|---|---|---|---|
| Under 25 | Below 1.5 ng/mL | 2.0–6.8 ng/mL | Above 6.8 ng/mL |
| 25–29 | Below 1.3 ng/mL | 1.9–6.5 ng/mL | Above 6.5 ng/mL |
| 30–34 | Below 1.0 ng/mL | 1.5–5.5 ng/mL | Above 5.5 ng/mL |
| 35–39 | Below 0.7 ng/mL | 1.0–4.0 ng/mL | Above 4.0 ng/mL |
| 40–44 | Below 0.3 ng/mL | 0.5–2.5 ng/mL | Above 2.5 ng/mL |
| 45+ | Below 0.1 ng/mL | 0.1–1.0 ng/mL | Above 1.0 ng/mL |
Different labs report different units. If yours says pmol/L instead of ng/mL, multiply ng/mL by 7.14 to convert. A US lab saying 2.0 ng/mL is the same as a European lab saying 14.3 pmol/L.
One more thing: some labs still print a single "normal range" of 1.0–4.0 ng/mL on the result sheet regardless of age. That's useless. Ignore it and read your number against the age-specific table above.
What "low AMH" actually means (and what it doesn't)
Low AMH means you have fewer eggs remaining than the average person your age. That's it. That's the whole finding.
It does not mean:
- You can't get pregnant naturally. Plenty of women with AMH below 0.5 conceive without any treatment at all. AMH is a poor predictor of natural fertility.
- You can't do IVF. Low AMH changes the protocol and typically yields fewer eggs per retrieval, but it doesn't rule out treatment. Many clinics specialize in poor responders.
- Your egg quality is bad. Quality is driven by age, not AMH. A 30-year-old with low AMH usually has better success rates than a 40-year-old with average AMH.
- You're in early menopause. AMH declines gradually. A single low reading doesn't mean your ovaries have stopped working.
What low AMH does mean in practical terms: if you're doing IVF, you'll likely retrieve fewer eggs per cycle. Instead of 12–15 eggs, you might get 4–6. That affects your strategy — you may need more cycles, you may want to bank embryos, and certain protocols (antagonist, minimal stimulation) may work better than others. A good reproductive endocrinologist will tailor the plan.
What affects your AMH besides age
Age is the biggest factor. Everyone's AMH drops with time. But several other things can move your number:
- Hormonal birth control. Pills, rings, and hormonal IUDs can artificially suppress AMH by 20–30%. If you're on hormonal contraception, ask your doctor whether to retest after a couple of months off.
- Smoking. Smokers have AMH levels about 10–15% lower than non-smokers at the same age, and they burn through their reserve faster.
- Vitamin D deficiency. Several studies show an association between low vitamin D and lower AMH. The research isn't settled, but topping up a deficiency is cheap and easy.
- Ovarian surgery. Prior surgery for endometriosis, cysts, or ovarian torsion can drop AMH significantly.
- Chemotherapy. Most chemo regimens reduce AMH, sometimes dramatically. This is why oncofertility consultations are so important before starting treatment — see our guide to fertility preservation before cancer.
- Autoimmune conditions. Conditions like thyroid disease and lupus can affect ovarian function.
- Genetics. Some women are genetically predisposed to earlier ovarian aging. If your mother went through menopause early, yours may track similarly.
What doesn't meaningfully move your AMH in the short term: diet, supplements, exercise, acupuncture, or any of the protocols you see advertised on Instagram. Nothing you buy in a bottle regrows ovarian reserve. Anyone selling you that is wrong or lying.
Getting tested: where, when, and how much
AMH is a simple blood draw. Unlike FSH, which fluctuates with your cycle, AMH can be measured any day of the month — the number is stable within about 10%. That's part of why it's become the go-to ovarian reserve test.
Options for getting tested:
- At a fertility clinic — usually part of an initial workup. If you're already seeing an REI, this is the most useful context for the result. Get matched with a clinic in your state if you don't have one yet.
- Through your primary care or OB-GYN — many can order the test. Coverage varies by insurance.
- Direct-to-consumer labs — Modern Fertility, LetsGetChecked, and a handful of others ship a finger-prick kit you mail back. Costs run $100–$200. The result is accurate, but interpretation without a doctor is where people get into trouble.
Cost range: $50–$250 out of pocket if your insurance doesn't cover it. Many insurance plans do cover fertility diagnostics but not treatment. See our state-by-state fertility insurance guide for what's typically covered where you live.
If your AMH is low
First: don't panic, and don't make any big decisions in the first 48 hours after getting a scary result. The number is information, not a verdict.
Second: if you're planning on biological children, this is the moment to move from "thinking about it" to "making a plan." Low AMH is a signal that time is a factor. That's not the same as being out of time.
Practical options, roughly in order of commitment:
- Repeat the test. Labs occasionally produce outliers. If your number looks dramatically off for your age, retest at a different lab before acting on it.
- See a reproductive endocrinologist. An REI can run the full workup — AMH, FSH, estradiol, antral follicle count on ultrasound — and give you a much clearer picture. AMH alone is incomplete. The signs it's time to see a fertility doctor post covers this.
- Consider egg freezing. If you're not ready to have children but want to preserve the option, this is the single best use of a "low AMH for my age" diagnosis. Read our complete egg freezing guide for what to expect.
- Consider trying to conceive sooner. If you have a partner and you were on the fence about timing, this is useful data.
- Look into embryo banking. For women with a partner who anticipate needing IVF, banking embryos across multiple retrievals can be more efficient than relying on a single cycle.
If your AMH is high
A high AMH usually means one of two things: you have a large remaining egg reserve (great), or you have PCOS.
Polycystic ovary syndrome typically elevates AMH because women with PCOS have many more small follicles than average. An AMH above 5 ng/mL in someone under 35 should prompt a PCOS workup if one hasn't already been done. High AMH alone isn't a diagnosis, but it's a strong signal worth investigating.
PCOS changes the fertility picture in specific ways. See our PCOS fertility treatment guide for what that looks like.
AMH and IVF success rates
Here's where people get the math wrong. AMH correlates with how many eggs you'll retrieve per IVF cycle, not with live birth per cycle directly. Those are different things.
A woman with high AMH might retrieve 20 eggs per cycle. A woman with low AMH might retrieve 5. But if both are 32 years old, their per-embryo success rates are roughly the same. The woman with fewer eggs just has fewer chances per cycle.
That's why many clinics recommend "egg banking" — doing multiple retrievals before transferring — for women with low AMH. You're accumulating chances. See our breakdown of IVF success rates by age for the bigger picture.
Common questions
Can I improve my AMH with supplements or diet? Not meaningfully. A few small studies suggest DHEA or CoQ10 may help egg quality in specific cases, but no intervention reliably raises AMH. Don't spend money on "ovarian rejuvenation" programs — the evidence isn't there.
My AMH dropped a lot in one year. Is something wrong? Possibly, or it could be normal variability plus a year of aging. Retest, and get an antral follicle count on ultrasound to confirm. Don't make decisions based on a single reading.
I'm 37 and my AMH is 4.0. Does that mean I'm biologically 30? No. It means you have a higher-than-average egg count for your age, which is a small advantage. Your eggs are still 37-year-old eggs.
Does a normal AMH mean I'm fertile? No. AMH tells you almost nothing about whether you'll conceive this month. Plenty of women with "normal" AMH struggle to get pregnant for unrelated reasons.
Should I freeze my eggs if my AMH is low? If you're under 38 and not ready for children, yes — this is one of the clearest indications for egg freezing. Later is not better.
The bottom line
AMH is one piece of a bigger picture. It's useful, it's relatively stable, it's easy to test, and it helps clinicians plan treatment. It is not a scoreboard, and it is definitely not a verdict. Your age matters more. Your egg quality matters more. Your overall workup matters more.
If your number worried you, the single best next step is to sit down with a reproductive endocrinologist who can put it in context. Start with our directory to find clinics in your area, or use the get matched tool to find the best fit for your situation. A half-hour consult will tell you more than a month of Googling.