Anti–Müllerian Hormone (AMH) Test
Date issued: August 2021
Review date: August 2023
Ref: B-479
PDF: Anti Mullerian Hormone (AMH) test final August 2021.pdf [pdf] 211KB
What is Ovarian Reserve?
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Ovarian reserve decreases with a woman’s age
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All women are born with a fixed number of eggs and this number reduces as they get older
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Women with a reduced number of eggs have a low ovarian reserve
What is AMH?
It is a marker of Ovarian Reserve
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Anti–Müllerian Hormone (AMH) is a hormone released by the small follicles in the ovary
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It gives us an idea about the number of remaining follicles and therefore eggs in the ovary
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It does not tell us about the quality of your eggs and there is a known decline in quality after the age of 35
How and when can I have my AMH tested?
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AMH assessment is done through a blood test.
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The range of AMH level remains relatively stable throughout your menstrual cycle so it can be taken at any point and will be organised by your fertility clinician.
Why am I being advised to have an AMH assessment?
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AMH tells us about the storage of eggs in your ovaries and helps us to counsel you regarding your chance of having a pregnancy and the best treatment options.
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During IVF/ICSI we use medications to stimulate your ovaries to produce eggs, we decide on the dose of your medications and your treatment protocol based on a number of things including age, diagnosis, previous treatment and AMH.
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AMH is the most reliable hormone to predict how well your ovaries will respond to medications.
AMH with Assisted Reproduction (IUI/IVF/ICSI)
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Women with lower AMH may not respond as well to drugs given in assisted reproduction meaning a reduced chance of pregnancy
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If AMH is high, it can help predict a complication called ovarian hyperstimulation syndrome
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The result of your AMH assessment will help your fertility specialist decide what treatment and dose of drugs you need
How do I find out my result? What is a good level?
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Your fertility clinician will inform you of your result at your appointment after the blood test
Current Lab Values in Derriford Hospital:
< 3 pmol/L Very low
3 - 8 Low
9 - 25 Satisfactory
26 - 40 Optimal
> 40 High
It is important to know different clinic laboratories use different testing methods. Therefore, if you have had a test in another clinic, we will repeat it so we have the best understanding of your result.
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Decreased AMH levels means less follicles and therefore reduced ovarian reserve
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Usually women with Polycystic Ovary Syndrome (PCOS) will have higher AMH levels because they have more follicles. This does not necessarily mean a better chance of pregnancy.
Can I improve my AMH?
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You cannot change your AMH and it is not due to lifestyle factors.
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AMH cannot tell us if you will achieve a pregnancy
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But it is considered the best hormone to help us understand how to treat you
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It will never increase and only decreases as you get older
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How much it decreases with age is different for every woman
What can you do to Improve your health for getting pregnant?
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Both men and women need to have a BMI below 29.9 (preferably within the normal BMI range 20-25)
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Do not smoke
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Eat a healthy diet
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Women to take high dose Vitamin D and folic acid
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Men to take Zinc, Selenium and Vitamin C 1g (on top of your normal dietary intake)