PRL and male infertility: In Receiver Operating characteristics(ROC) curve analysis, serum hormones; LH (AUC=0.638, Z=4.31, p<0.001), FSH (AUC=0.710, Z=7.19, p<0.001), Testosterone (AUC=0.718, Z=6.72, p<0.001), PRL (AUC=0.764, Z=9.95, p<0.001)showed the significant prediction for overall male infertility in comparing with controls.