AMH and Ovarian Reserve: Understanding Your Fertility Numbers
What your AMH level really means, how to interpret your results, and what it does—and doesn't—tell you about your fertility.
AMH (anti-Müllerian hormone) measures your ovarian reserve—how many eggs you have left. It predicts how you'll respond to fertility treatment and gives information about timing. But AMH does NOT predict your ability to get pregnant naturally. Low AMH doesn't mean you can't conceive; it means you have fewer eggs and may have less time. High AMH often indicates PCOS.
Egg quality is determined primarily by age, not AMH.
What Is AMH?
Anti-Müllerian hormone (AMH) is produced by cells in your ovarian follicles. It reflects the number of immature eggs waiting to develop—your "egg bank balance."
Unlike other fertility hormones, AMH stays relatively stable throughout your cycle, so it can be tested any day. It's measured with a simple blood test.
What Your AMH Number Means
| AMH Level (ng/mL) | Interpretation | What It Suggests |
|---|---|---|
| 4.0+ ng/mL | High | Often indicates PCOS; high response to IVF (watch for hyperstimulation) |
| 1.0-4.0 ng/mL | Normal | Good egg supply for your age; typical response to treatment |
| 0.5-1.0 ng/mL | Low-Normal | Below average reserve; may respond less to stimulation |
| < 0.5 ng/mL | Low | Diminished ovarian reserve; fewer eggs, may need aggressive treatment or donor eggs |
Important: These cutoffs are general guidelines. Interpretation depends on your age, other test results, and the specific lab used. Your doctor should explain your results in context.
What AMH DOES Tell You
What AMH Does NOT Tell You
Studies consistently show that AMH does not predict pregnancy chances for women trying naturally. A 30-year-old with low AMH can get pregnant just as easily as a 30-year-old with normal AMH—you only need one good egg per month. AMH tells you quantity, not quality; age determines quality.
AMH also doesn't tell you:
- Whether your eggs are healthy or chromosomally normal
- Whether you're ovulating regularly
- Whether you have other fertility issues (tubes, uterus, partner)
- When you'll enter menopause (just that it might be earlier/later)
Other Ovarian Reserve Tests
AMH is one piece of the picture. Doctors often look at multiple markers:
If Your AMH Is Low
Low AMH doesn't mean you can't get pregnant. Many women with low AMH conceive naturally or with treatment. But it does suggest you may have less time than average, so don't delay treatment if you're struggling. Consider seeing a fertility specialist sooner rather than later.
Options with low AMH include:
- Try naturally—especially if young and no other factors
- Clomid/letrozole + IUI—reasonable first step
- IVF with mild stimulation—quality over quantity approach
- Multiple IVF cycles—"banking" embryos over time
- Donor eggs—if own eggs aren't working
If Your AMH Is High
High AMH (>4+ ng/mL) often suggests PCOS. This can mean:
- Lots of eggs available (good for IVF egg yield)
- Risk of ovarian hyperstimulation syndrome (OHSS) with fertility meds
- May have irregular ovulation—treatable with medication
High AMH isn't "good" or "bad"—it's information. If you have PCOS symptoms, discuss them with your doctor.
Frequently Asked Questions
No proven way exists to increase AMH. Some supplements (DHEA, CoQ10, vitamin D) are sometimes used to support egg quality, but they don't significantly raise AMH. AMH reflects the eggs you were born with; you can't create more. Focus on optimizing the eggs you have through lifestyle and appropriate treatment timing.
AMH declines naturally with age, but the rate varies significantly between women. On average, it drops about 5-10% per year in your 30s, faster in your late 30s and 40s. Some women maintain stable levels for years; others decline quickly. Testing every 1-2 years can track your personal trend if you're not ready to conceive yet.
It can be useful information, especially if you're in your early-mid 30s and want to know where you stand. A very low result might prompt earlier family planning or egg freezing. But remember: AMH doesn't predict natural fertility, so a "normal" result doesn't guarantee easy conception, and a "low" result doesn't mean you'll struggle. Use the information wisely, not as a source of anxiety.
Young women with low AMH (sometimes called "diminished ovarian reserve" or DOR) have fewer eggs than expected for their age—but those eggs are still young, healthy eggs. Your pregnancy chances are still good, especially with your age on your side. However, it suggests your fertility timeline may be shorter, so don't delay if you want children. Consider egg freezing if you're not ready to conceive soon.
At-home AMH tests (like Modern Fertility, LetsGetChecked) are generally accurate for measuring AMH levels. The challenge is interpretation—these tests can cause unnecessary anxiety or false reassurance without proper context. A number alone doesn't tell your whole fertility story. If results concern you, discuss with a doctor who can do a complete evaluation.
The Bottom Line
AMH is a useful piece of information—especially for fertility treatment planning. But it's just one test, not a fertility verdict.
Low AMH doesn't mean you can't get pregnant. It means you may have less time and fewer eggs to work with. High AMH doesn't mean easy conception. It may indicate PCOS and potential ovulation issues.
Whatever your number, it's information to guide your path forward—not a sentence. Work with a fertility specialist who can interpret your results in the context of your full picture.
Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice. AMH results should be interpreted by a qualified healthcare provider in the context of your complete fertility evaluation.