This is education, not medical advice, and not a promise about your fertility. Every number here is something to discuss with your own provider, and decisions about testing and treatment are for the two of you to make together.
AMH is a marker of your ovarian reserve, a rough estimate of how many eggs you have left. It tells you nothing about how good those eggs are. It is genuinely useful for predicting how your ovaries might respond to IVF stimulation, but it is a weak and inconsistent predictor of whether you will conceive naturally. A low number does not mean you can't get pregnant, and a high number doesn't promise that you will. If a single result left you feeling that the door was closing, you were given the wrong way to look at it.
Few numbers cause as much private panic as AMH. You went for routine bloodwork, a result came back "low," and somewhere between the lab slip and the drive home it turned into a verdict, a clock counting down against you. So let's look carefully at what AMH measures, what it can't see and what the research really says. The accurate version is far less frightening than the one most women are given.
What does a "low" AMH actually mean?
The pool of small resting follicles in your ovaries is on the smaller side for your age. It is a rough measure of quantity. It doesn't measure egg quality, and it doesn't tell you your chances of conceiving this month.
AMH (anti-Müllerian hormone) is made by the small follicles resting in your ovaries. That pool shrinks with age, so AMH tends to fall over time, which is why it is used as a rough gauge of your remaining egg supply. In an IVF clinic, that is practical information. It helps predict how many eggs a stimulation cycle might produce and helps the doctor choose a protocol. That specific job is what AMH was validated for.
What AMH does not measure
This is where the story usually gets twisted. AMH tells you almost nothing about the things that matter most for conceiving naturally.
AMH counts the eggs in the basket. It doesn't check whether they are good, and it can't tell you what will happen this month.
Egg quality
Whether an egg is fertilized and grows into a healthy embryo depends far more on its quality, and no single blood test captures quality, AMH included. That is exactly why two women with the same AMH can have completely different experiences.
Your odds of conceiving this cycle
AMH reflects your supply, not your chance of getting pregnant in a given month. It was never designed to answer "will it happen this month?" and it can't.
Whether "something is wrong"
Plenty of women with a low AMH conceive, and plenty with a high AMH struggle for reasons AMH can't see. A lowish number describes your reserve. It isn't a diagnosis.
What the research actually shows
Take your time with this section, because this is where fear usually runs ahead of the evidence.
A well-known 2017 study in JAMA followed women aged 30 to 44 who were trying to conceive and had no history of infertility. Women with a "low" AMH were no less likely to conceive within six or twelve cycles than women with normal levels. Based on evidence like this, the American College of Obstetricians and Gynecologists (ACOG) advises against using AMH to assess fertility in women who aren't already known to have a fertility problem.
In fairness, the evidence isn't unanimous. A 2021 systematic review and meta-analysis of 11 studies and 4,388 women found that women with a high AMH had slightly higher pregnancy rates and conceived a little faster than women with low or intermediate levels. A 2024 study of more than 3,000 women found that the chance of conceiving in any one cycle rose gently with AMH level. So AMH isn't irrelevant to natural fertility. The same research, though, recorded natural pregnancies in women with an AMH as low as 0.2 ng/mL.
AMH is not meaningless. It is a marker of reserve and of how you might respond to IVF, and it is routinely oversold as a verdict on natural fertility. Those are two very different claims, and a lot of unnecessary fear comes from confusing them. Where the evidence is mixed, as it is here, I would rather say so openly than smooth it over.
So what should you actually do with a low AMH result?
See it as one piece of information. If you are considering IVF, a low AMH helps with planning and with conversations about your timeline, and that is a good reason to have the test. If you are trying naturally, it is no reason to panic or to jump to the worst case.
And if your AMH is normal, don't let that end the investigation either. A normal AMH after a year of unexplained trying is just one data point. The more useful question is rarely "what's my AMH?" Ask instead what pattern shows up when you look at everything together, including your cycle, your thyroid, your iron and your history, and what the next targeted step should be. Have that conversation with a provider who will look at the whole picture and not just one line on a lab slip.
How to read your AMH result
- You are considering or planning IVF
- You want a realistic conversation about your timeline
- You are choosing a stimulation protocol with a specialist
→ This is the job it was validated for.
- "I can't get pregnant naturally"
- A measure of your egg quality
- Your odds of conceiving this cycle
- A reason to skip looking for underlying causes
→ For these questions, AMH is the wrong tool.
No single number sets your timeline. Your full picture, discussed with your provider, does.
AMH measures roughly how many eggs you have. It doesn't measure how fertile you are. It is valuable in IVF planning and loses its authority as soon as someone treats it as a score for natural fertility. If one number ever made you feel the door was closing, please ask the bigger question, and take it to someone who will work through it with you.