Accuracy of anti-Müllerian hormone and total follicles count to diagnose polycystic ovary syndrome in reproductive women

Recently, there was a new recommendation of ultrasonographic criteria to diagnosis polycystic ovary syndrome (PCOS). In addition, serum anti-Müllerian hormone (AMH) was proposed as a surrogate marker for diagnosis of PCOS, but AMH cut-off level for diagnosis of PCOS is unclear. This study aimed to investigate the accuracy of serum AMH and evaluate new ultrasonographic criteria, follicle number per ovary (FNPO) threshold ≥ 25 follicles and ovarian volume (OV) > 10 mL, for diagnosis of PCOS. A cross-sectional study was conducted. Fifty-five PCOS women and sixty-three normal ovulatory, non-hyperandrogenic women were recruited. Transvaginal or transrectal ultrasonography was performed in all participants to evaluate follicle number and OV. Serum AMH was evaluated in both study groups. The mean age of the participants was 25.1 ± 5.3 years old in PCOS group and 29.7 ± 7.2 years old in control group. Mean AMH, FNPO and OV in PCOS women were significantly higher than those in non-PCOS women. The area under the receiver-operating characteristic (ROC) curve of AMH was 0.903. The threshold of AMH at 4.7 ng/mL offered the best compromise between 80% sensitivity and 77.8% specificity. The appropriated threshold values for FNPO, follicle number per cross-section (FNPS) and OV were 15 follicles, 7 follicles and 6.5 mL, respectively. Serum AMH level was significantly positively correlated with FNPO, FNPS and OV in both PCOS and control groups. In PCOS women, serum AMH showed strongly correlation with FNPO (r = 0.53, p