MUC16 and endometriosis: Following urine creatinine normalization, both urine CA125-creatinine ratio and urine VDBP-creatinine ratio demonstrated significant differences in median values between patients with endometriosis and non-endometriotic cohorts (urine CA125 ratio: 5.591 vs. 0.254, p = 0.028; urine VDBP ratio: 28.03 vs. 7.30, p = 0.018).