PRL and polycystic ovary syndrome: Table 1 provides backgrounds and clinical characteristics of all cases. Considerable variations were observed regarding age, BMI, infertility (primary, or secondary), basal hormone level (bFSH, bLH, bT, and PRL), AMH, CA125, cholesterol (CHOL), and triglyceride (TG) (P < 0.05) across both cohorts. The BMI, the proportion of primary infertility, and the levels of bLH, bT, AMH, CHOL, and TG were all significantly higher in the PCOS cohort than in the non-PCOS cohort, but the age/bFSH, PRL, and CA125 levels were significantly lower (P < 0.05).