PRL and Infertility: There was no statistically significant difference between the successful and unsuccessful pregnancy groups in terms of BMI, type of infertility, basal sex hormones bFSH, bLH, bE2, P, PRL, and T, number of Gn days, HCG day E2 (estrogen value), method of fertilization (IVF/ICSI), and oocyte-stage embryos (p > 0.05) (Table 1).