PRL and endometriosis: Significant differences were also observed in the concentrations of IL-6, hs-CRP and PRL when the non-endometriosis group (median values: 1.93 pg/mL, 0.99 mg/L and 22.78 ng/mL, respectively) was compared with the group of healthy women (p = 0.010, p = 0.037 and p < 0.001, respectively).