Percent Free Prostate Specific Antigen Does Not Enhance the Specificity of Total Prostate Specific Antigen for the Detection of Prostate Cancer in Korean Men 50 to 65 Years Old: A Prospective Multicenter Study

Our study revealed racial differences in the relationship between percent free prostate specific antigen and cancer detection in men with prostate specific antigen 4.0 to 10.0 ng/ml. Percent free prostate specific antigen provided no added diagnostic benefit vs total prostate specific antigen in Korean men 50 to 65 years old with a palpably benign prostate gland and prostate specific antigen 4.0 to 10.0 ng/ml.