AMH and polycystic ovary syndrome: However, in our experience, a cut off at 35 pmol/L (4.9 ng/mL) with the enzyme immunoassay AMH-EIA (EIA AMH/MIS kit) (“Immunotech”, ref A16507) provided by Beckman Coulter (France) had a good specificity (97 %) and a better sensitivity than the AFC (92 %) to distinguish women with PCOS from normal women [73].