Understanding Your AMH Level

AMH is a hormone produced by the small follicles in your ovaries. It provides an estimate of your ovarian reserve, essentially, how many eggs remain in your ovaries at a given point in time.

Unlike other fertility hormones that fluctuate throughout your menstrual cycle, AMH levels remain relatively stable. This means the test can be performed on any day of your cycle, making it a convenient marker for female fertility assessment.

However, it's important to understand that AMH measures quantity, not quality. A woman with a lower AMH may still have good quality eggs, while a higher AMH doesn't guarantee that all eggs are chromosomally normal.

AMH levels naturally decline with age as the ovarian reserve diminishes. The following ranges provide general guidance, though individual variation is significant:

These figures are approximate. Different laboratories may use different assays with varying reference ranges, so it's essential to interpret your result in context with your clinician.

This is one of the most common misconceptions about AMH. A low AMH level does not mean you cannot fall pregnant naturally. Many women with low AMH conceive without assistance.

What a low AMH may indicate is that you have fewer eggs remaining than average for your age. This information becomes particularly relevant if you're considering delaying pregnancy or if you may need IVF treatment, where the number of eggs retrieved can affect the number of embryos available.

Natural conception requires only one good quality egg each month. AMH tells us about the overall pool of eggs, not about the specific egg released in any given cycle.

AMH is particularly valuable when planning IVF or egg freezing because it helps predict how your ovaries will respond to stimulation medications.

• Higher AMH: May indicate a stronger response to stimulation, potentially yielding more eggs. However, this also carries a higher risk of ovarian hyperstimulation syndrome (OHSS), so medication doses are carefully adjusted.
• Lower AMH: Suggests fewer eggs may be retrieved. Your specialist may recommend modified protocols or discuss realistic expectations about egg numbers.

For women considering egg freezing to preserve fertility, AMH helps estimate how many cycles might be needed to store a reasonable number of eggs.

Currently, there is no proven way to increase your ovarian reserve or significantly raise AMH levels. The number of eggs you have is determined before birth and declines throughout your reproductive life.

Some supplements and lifestyle modifications are marketed as improving AMH, but scientific evidence for these claims is limited. While maintaining overall health through balanced nutrition, regular exercise, and avoiding smoking may support general fertility, these measures cannot reverse the natural decline in egg numbers.

Occasionally, AMH levels may fluctuate slightly between tests due to laboratory variation or assay differences. A single low result should be interpreted alongside other findings, including an ultrasound assessment of your antral follicle count.

Several misunderstandings about AMH can cause unnecessary anxiety:

• "Low AMH means infertility": As discussed, low AMH does not predict natural conception chances in the short term.
• "High AMH means I have plenty of time": While reassuring, a high AMH doesn't account for egg quality, which declines with age regardless of quantity.
• "AMH tells me when I'll reach menopause": AMH can provide some indication of timing, but it's not a precise predictor of menopause onset.
• "I only need AMH to assess my fertility": A complete fertility assessment includes hormone tests, ultrasound, and often partner evaluation. AMH is one piece of a larger picture.