If you have been looking into fertility tests, you may have come across AMH, or anti-Müllerian hormone. It is a hormone measured through a blood test and is commonly used as part of an assessment of ovarian reserve.
You may be wondering what your AMH level means, whether a high result is good, or whether a low result means you will have difficulty getting pregnant.
AMH can provide useful information, particularly when planning fertility treatment. However, it is important to understand its limitations. An AMH result cannot, on its own, tell you whether you can get pregnant naturally or guarantee the outcome of IVF.
In this guide, we'll explain what AMH is, why doctors test it, how results are interpreted and what questions to ask if you have received your report.
What Is AMH?
AMH stands for anti-Müllerian hormone. In the ovaries, it is produced by cells in small developing follicles, which contain immature eggs.
The amount of AMH in the blood can provide an indirect indication of the number of small follicles present in the ovaries. This is why AMH is commonly used as a marker of ovarian reserve.
Ovarian reserve refers mainly to the quantity of eggs remaining in the ovaries. It is different from egg quality, which concerns an egg's potential to be fertilised and support embryo development.
AMH is only one part of a fertility assessment. Your age, medical history, menstrual cycle, other test results and reproductive goals all matter when interpreting it.
Why Is an AMH Test Done?
A doctor may recommend an AMH blood test for several reasons.
1. To assess ovarian reserve
AMH helps provide an estimate of ovarian reserve. It may be considered alongside antral follicle count, which is measured using a transvaginal ultrasound.
2. To help plan IVF treatment
AMH can help a fertility specialist estimate how the ovaries might respond to medicines used to stimulate follicle development during IVF.
A higher or lower result may influence how the doctor plans stimulation and monitors the response. It does not determine the outcome by itself.
3. To investigate certain reproductive concerns
Depending on your symptoms and medical history, AMH may be included in a broader assessment of ovarian function. It may also be considered in some evaluations involving suspected polycystic ovary syndrome (PCOS), but it should not be used alone to diagnose PCOS.
4. To support fertility-preservation discussions
If you are considering egg freezing or medical treatment that could affect the ovaries, AMH may contribute to the discussion. It cannot, by itself, tell you how long you can safely delay pregnancy or guarantee how many eggs will be retrieved.
How Is an AMH Test Performed?
An AMH test is a blood test. A healthcare professional takes a sample from a vein in your arm and sends it to a laboratory for analysis.
Unlike some other reproductive hormone tests, AMH can generally be measured at different points in the menstrual cycle. However, certain factors, including hormonal contraception and laboratory differences, can affect interpretation.
Ask your doctor whether you need any specific preparation before the test. Do not stop prescribed medicines or contraception unless your healthcare professional advises you to do so.
What Is a Normal AMH Level?
There is no single AMH value that is ideal for every person.
AMH levels vary with age, individual biology, the laboratory assay and other circumstances. Different laboratories may use different reference ranges and units, so it is important to read your result alongside the reference information provided by the laboratory.
A report may describe AMH as low, within a reference range or high. These labels should not be interpreted without considering the reason for testing and your overall clinical picture.
Your doctor may consider:
Your age.
The AMH value and the units used.
The laboratory's reference range.
Your antral follicle count, if available.
Your medical and reproductive history.
Whether the test is being used for fertility assessment, IVF planning or another clinical reason.
Avoid comparing your result directly with someone else's. Two people with the same AMH level may have different fertility circumstances and treatment responses.
What Does a Low AMH Level Mean?
A low AMH level may suggest that the number of small developing follicles in the ovaries is lower than expected in a particular context.
In fertility treatment, low AMH can help a specialist anticipate that the ovaries may produce fewer eggs in response to stimulation. It may therefore be relevant when discussing IVF planning.
However, a low AMH result does not automatically mean:
You cannot become pregnant naturally.
You have no eggs remaining.
Your eggs are necessarily poor quality.
IVF cannot work.
You are about to enter menopause.
AMH is not a direct count of every egg remaining, and it cannot independently predict an individual's chances of pregnancy. Your age and other fertility factors remain important.
If your result is low, ask your doctor what it means in your specific situation rather than assuming the worst.
What Does a High AMH Level Mean?
A higher AMH level may be associated with a greater number of small follicles in the ovaries.
In some people, high AMH can be associated with PCOS, a hormonal condition that may affect ovulation. However, a high AMH result alone does not diagnose PCOS. Diagnosis requires consideration of symptoms, medical history and other clinical findings.
A higher AMH level may also help a fertility specialist anticipate a stronger response to ovarian stimulation. In some circumstances, this can mean a greater risk of ovarian hyperstimulation syndrome (OHSS), a potentially serious complication of fertility treatment. Your care team can adjust the treatment plan and monitoring to help manage this risk.
High AMH does not guarantee good egg quality or a higher chance of natural pregnancy.
Can AMH Tell You Whether You Will Get Pregnant Naturally?
No. AMH is not a reliable stand-alone predictor of natural conception.
Although it provides information about ovarian reserve, natural pregnancy depends on several factors, including:
Age and egg quality.
Whether ovulation occurs.
Sperm health.
Whether the fallopian tubes are open and functioning.
The health of the uterus.
The length of time you have been trying to conceive.
Other medical conditions that may affect fertility.
A person with a low AMH level may still conceive naturally, while a person with a higher level may experience infertility for other reasons.
This is why a fertility assessment looks at the broader picture rather than relying on one blood test.
Does AMH Predict IVF Success?
AMH is useful in estimating how many eggs the ovaries may produce during IVF stimulation. It can help the specialist anticipate a lower or higher response and plan treatment accordingly.
However, predicting the number of eggs is not the same as predicting whether a baby will be born.
IVF outcomes also depend on age, egg and sperm factors, embryo development, the treatment protocol, laboratory factors and other clinical circumstances.
A low AMH result should not automatically be taken to mean that IVF is impossible. Your fertility specialist can explain what the result suggests about your likely response and discuss realistic options.
Does AMH Change With Age?
AMH generally declines as ovarian reserve decreases with age, although the rate of change varies considerably between individuals.
A person's AMH level does not provide a precise countdown to menopause or tell them exactly how much time they have left to conceive.
Age remains an important factor in reproductive outcomes, particularly because egg quality and the likelihood of chromosome abnormalities change with age. An AMH result should therefore be interpreted alongside age rather than used as a replacement for it.
What Should You Ask Your Doctor About Your AMH Result?
If you have received an AMH report, consider asking:
What does this result mean for someone of my age?
Is the value low, expected or high according to this laboratory's reference range?
Should it be interpreted alongside an antral follicle count or other tests?
Does this result change the next steps in my fertility assessment?
If I am considering IVF, what might it mean for ovarian stimulation?
Are there any symptoms or medical factors that need further investigation?
What should I consider if I am planning pregnancy or fertility preservation?
These questions can help you understand the result without treating it as a definitive prediction of your future fertility.
Frequently Asked Questions
1. Is AMH a fertility test?
AMH is a marker of ovarian reserve. It can help with fertility treatment planning, particularly predicting ovarian response to stimulation, but it cannot independently determine whether someone can conceive naturally.
2. Can I get pregnant with low AMH?
Yes, pregnancy may still be possible. The likelihood depends on your age and other fertility factors, not AMH alone. A specialist can help you interpret your result.
3. Does high AMH mean good egg quality?
No. AMH mainly provides information about ovarian reserve, not the quality of individual eggs.
4. Do I need to take the AMH test on a particular day of my cycle?
AMH can generally be measured at different points in the menstrual cycle. Follow the instructions given by your healthcare professional and laboratory.
5. Can diet or supplements increase AMH?
There is no established diet or supplement that reliably restores ovarian reserve. Do not take a change in AMH as proof that egg quantity, egg quality or pregnancy chances have improved.
6. Does AMH tell me when I will reach menopause?
No. AMH cannot accurately predict the exact timing of menopause for an individual.
Where to Go Next
Continue learning about female fertility with these Dream Baby articles:
What Is Ovarian Reserve? Learn how ovarian reserve relates to egg quantity and fertility tests.
Egg Quality and Fertility: Understand the difference between egg quantity and egg quality.
Fertility Tests for Women: Learn about common investigations used in fertility assessment.
Medical Disclaimer
This article is for general educational purposes only and is not a substitute for individual medical advice, diagnosis or treatment. AMH results should be interpreted by a qualified healthcare professional in the context of age, medical history and fertility goals. This article has not been medically reviewed by a Dream Baby doctor.
References
1. American Society for Reproductive Medicine (ASRM) — Testing and Interpreting Measures of Ovarian Reserve: A Committee Opinion (2020). https://www.asrm.org/practice-guidance/practice-committee-documents/testing-and-interpreting-measures-of-ovarian-reserve-a-committee-opinion-2020/
2. American Society for Reproductive Medicine (ASRM) — Fertility Evaluation of Infertile Women: A Committee Opinion (2021). https://www.asrm.org/practice-guidance/practice-committee-documents/fertility-evaluation-of-infertile-women-a-committee-opinion-2021/
3. American College of Obstetricians and Gynecologists (ACOG) — The Use of Antimüllerian Hormone in Women Not Seeking Fertility Care. https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2019/04/the-use-of-antimullerian-hormone-in-women-not-seeking-fertility-care