INS and polycystic ovary syndrome: FAI significantly correlated with BMI (r = 0.501, p < 0.0001), fasting insulin (r = 0.291, p < 0.0001), HOMA-IR (r = 0.298, p < 0.0001) and 2 h insulin in the OGTT (r = 0.373, p < 0.0001) in PCOS, while TT was not significantly correlated with BMI (r = 0.059, p = 0.36), fasting insulin (r = 0.041, p = 0.53), HOMA-IR (r = 0.039, p = 0.55) and OGTT 2 h insulin (r = 0.079, p = 0.29) in our patients.