KLK3 and neoplasm: We found that higher PSA levels translated to ahigher rate of positivity on the examination and, in general, greater tumor volume.The rate of positivity on the examination was 38.5% for PSA values of 0.02-0.49ng/mL, 71.0% for PSA values of 0.50-0.99, 85.7% for PSA values of 1.00-1.99, and92.6% for PSA values > 1.99.