The results revealed that PCOS was positively correlated with E2 (r = 0.197, P = 0.009), LH (r = 0.479, P < 0.001), TSTO (r = 0.355, P < 0.001) and AMH (r = 0.552, P < 0.001). Here, AMH is linked to polycystic ovary syndrome.