The AUCs were not improved using multivariate ROC curves (ADCmean, Kep, and PSA density combined, 0.92 (95% CI, 0.76–1.00) in no/discrete prostatitis and 0.91 (95% CI, 0.84–0.97) in severe prostatitis) (Figure 8). Here, KLK3 is linked to prostatitis.