When three different AMH assays (Gen II-Beckman Coulter, picoAMH-Ansh Labs, and Elecsys-Roche) were compared, the inter-assay correlation in women with PCOS was stronger in the low (<2.8 ng/mL) and high (>7.04 ng/mL) range serum AMH level subgroups [70]. This evidence concerns the gene AMH and polycystic ovary syndrome.