Anti-Müllerian Hormone
Anti-Müllerian hormone (AMH) is produced by cells in the ovaries and testicles. In people with ovaries, it reflects the pool of remaining eggs, often called the ovarian reserve.
Ovarian reserve marker. Cycle-day independent; can be drawn any time. Elevated in PCOS (typically >4 ng/mL). Gen II assays ~2x lower than Gen I, specify assay generation.
AMH gives a snapshot of how many small, developing follicles the ovaries currently hold, which is one part of understanding fertility. Unlike some hormones, it stays fairly stable across the menstrual cycle, making it convenient to measure. It is also used in fertility treatment planning and can be part of evaluating conditions such as polycystic ovary syndrome.
A higher AMH generally reflects a larger pool of developing follicles and can be seen in polycystic ovary syndrome. It does not by itself confirm any condition and is interpreted alongside symptoms, ultrasound, and other hormones.
A lower AMH suggests a smaller remaining egg pool, which tends to occur naturally with age, but it does not predict whether or when you can conceive on its own.
AMH is interpreted against age-specific expectations and your reason for testing rather than a universal ideal. It is one piece of a broader fertility picture; discuss your result with your clinician or a fertility specialist.
Sources
Educational context only, not medical advice or a diagnosis. Reference ranges vary by lab, age and sex; always discuss your results with a clinician.