AMH is a hormone from egg-holding follicles, and its blood level estimates your ovarian reserve, the number of eggs you have left.
Higher AMH means more eggs remaining; the level declines with age as the supply shrinks. Two limits deserve equal billing. AMH says nothing about egg quality or health, and it cannot predict your chance of conceiving naturally, because quality tracks age more than quantity. The test's real power is in treatment planning: fertility clinics use AMH to predict how ovaries will respond to stimulation medication and to dose it properly for IVF or egg freezing. It also flags the extremes, low reserve (few eggs to work with) and unusually high reserve (which can accompany PCOS and raises overstimulation risk during treatment). The test itself is a basic blood draw, doable any day of your cycle, and it can also hint whether menopause is approaching. Treat the result as one data point in a fuller workup, not a fertility scorecard.
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What is AMH and what does it tell you?
AMH, anti-Mullerian hormone, is produced by the small follicles in your ovaries that hold immature eggs, so a blood test of AMH gives an estimate of how many eggs you have left, your "ovarian reserve." Higher AMH means a larger remaining supply; as you age and the egg count falls, AMH falls with it, which is why the test also helps gauge whether menopause is approaching. The limits matter as much as the signal. AMH cannot tell you about the quality or health of your eggs, and it cannot predict whether you will get pregnant naturally. Age remains the better guide to egg quality, which is exactly why two people with the same AMH at 28 and 38 have different outlooks. Where AMH earns its keep clinically is fertility treatment: it predicts how your ovaries will respond to stimulation drugs, so it helps set the right medication dose for egg freezing or IVF, and it helps flag low reserve (few eggs to collect) or very high reserve (a sign that can point toward PCOS and a higher risk of overstimulation). It is a simple blood draw on any cycle day. Read it as a count, not a verdict: one number about quantity, most useful inside a bigger fertility conversation.