The updated PCOS guideline recommends that laboratories involved in AMH measurements in females should use population and assay-specific cut-offs.1Commercial assays for the measurements of AMH have been available since the late 1990s, the AMH Gen II ELISA (marketed by Beckman-Coulter, Inc.)being the most widely used assay kit for many years. This evidence concerns the gene AMH and polycystic ovary syndrome.