Additional value of PCA3 density to predict initial prostate biopsy outcome

Purpose Similar to prostate-specific antigen (PSA) density, PCA3 density (PCA3D: ratio of urinary PCA3 score/prostate volume) can be calculated, but whether it can be an aid to decide biopsy in patients at risk of prostate cancer (PCa) is uncertain. The objective was to demonstrate that PCA3D provides better specificity than PCA3 in predicting initial prostate biopsy outcome.