AMH tested as a surrogate for PCOM. Cut-offs: 95%, 97.5%, 5 and 3.2 ng/mL. AMH cut-offs resulted in 5.9, 6,8, 9.8, and 13.6% prevalence of PCOS, respectively. All cut-offs captured populations with typical characteristics for PCOS as for hormonal and metabolic outcomes. AMH cut-off for PCOS (NIH criteria) was 4.9 ng/mL. The gene discussed is AMH; the disease is polycystic ovary syndrome.