Many medical care professionals used to recommend regular PSA screening for males aged 50 and older, according to the National Cancer Institute. However, the general consensus in the medical community is that men interested in PSA screening should learn about the potential benefits and drawbacks prior to getting tested.
There is no normal value for PSA in the blood, explains the National Cancer Institute. Many individuals without prostate cancer had PSA levels above the previously accepted standard and vice versa. Prostate biopsy and surgery can increase PSA levels. Generally, a higher PSA level that increases over time indicates a higher likelihood of prostate cancer.