AMH (Anti-Müllerian Hormone) is one of the most talked-about fertility tests, and also one of the most misunderstood. Many patients receive a number without a clear explanation, which can cause unnecessary worry. Here’s what AMH really means, what it doesn’t, and why it’s only one piece of a much bigger fertility picture.
What AMH Is and What It Is Not
AMH is a hormone produced by the small follicles in your ovaries. It reflects ovarian reserve, meaning the number of developing eggs that remain. Higher AMH levels are generally associated with a greater number of eggs that may be retrieved in an IVF cycle.
However, AMH is not:
- A measure of egg quality
- A direct predictor of pregnancy
- A test that can tell you whether IVF will work or not
In other words, AMH tells you about quantity, not quality. Fertility outcomes like embryo development, implantation, and pregnancy depend on many other factors, including egg age, sperm quality, and uterine environment.
Why AMH Results Can Look Different
You may notice one lab reports an AMH of 5 and another says 35, even if the test was done around the same time. This is usually because:
- AMH can be reported in different units (ng/mL vs pmol/L)
- Different labs use different assays and reference ranges
For example, 5 pmol/L is not the same as 5 ng/mL. This is why your results should always be interpreted by your fertility specialist, ideally using the same lab for consistency.
Age: The Strongest Predictor of Egg Quality
Doctors often say age is the strongest predictor of fertility. This means that egg quality declines with age, regardless of AMH level.
- You can have a high AMH but lower egg quality if you are older
- You can have a low AMH but very good egg quality if you are younger
This explains why two people with the same AMH can have very different IVF outcomes. AMH predicts how many eggs you may have, while age affects their genetic health.
Why Knowing Your AMH Can Be Helpful
Even with its limitations, AMH is useful for guiding fertility treatment. Knowing your AMH can help:
- Predict how your ovaries may respond to stimulation in IVF
- Guide medication choice and dosage
- Reduce the risk of over- or under-stimulation
- Support planning for fertility preservation or treatment timing
In short, AMH helps personalise your treatment, but it does not predict your chance of pregnancy.
How AMH Is Tested
AMH is measured with a simple blood test:
- You do not need to fast
- It can be taken on any day of your cycle
- The test is quick and straightforward
This makes AMH one of the easiest fertility hormones to assess.
Factors That Can Affect AMH Results
AMH levels can be influenced by:
- Hormonal contraception
- Polycystic ovary syndrome (PCOS)
- Recent ovarian surgery
- Laboratory variability
- Natural biological variation
Because of this, AMH should never be interpreted alone.
Can You Increase Your AMH?
Currently, there is no proven way to significantly raise AMH. Lifestyle changes, supplements, or medications may support general reproductive health, but they do not reliably increase ovarian reserve. AMH naturally declines with age, which is why early assessment and careful planning are important.
Fun Fact: Men Have AMH Too
AMH was first discovered in men. During fetal development, it prevents the formation of female reproductive structures. In adult men, AMH is produced by the testes and sometimes used in paediatric or endocrine assessments, but it has no role in male fertility planning like it does in women.
AMH Is Part of a Bigger Picture
AMH is just one piece of information, not the full story. Fertility assessment works best when AMH is considered alongside:
- Age
- Antral follicle count (AFC)
- Other hormone levels (e.g., FSH, estradiol)
- Medical history and individual goals
At Pedieos IVF Centre, AMH is used as a guide to personalise care, not as a label or limitation.
