Question: is a psa level of 0.5 good?
Answer: The level of PSA is a continuous parameter; the higher the value, the higher the probability of having prostate cancer. On the other hand, men may have prostate cancer despite low levels of PSA. In a U.S. prevention study, 6.6% of the men whose PSA level was less than 0.5 ng/mL had prostate cancer.