PSA tests have saved, prolonged many lives
Like many men, I started having PSA tests when I turned 55. According to the National Cancer Institute, "The PSA test measures the blood level of PSA, a protein that is produced by the prostate gland. The higher a man's PSA level, the more likely it is that he has prostate cancer."
When my PSA became abnormally high (336), a CT scan showed stage 4 cancer because it had spread from my prostate to one or more lymph nodes. I underwent two eight-week periods of daily radiation. After four weeks of treatment, my PSA had dropped to 69; after eight weeks it had dropped to 2.46; and after 16 weeks, it had dropped to 0.07. I can't say enough about the wonderful care at CCS Oncology. They were caring, kind, respectful and always honest.
For me, paying attention to the PSA tests probably saved my life; at least extended it well beyond the timeline initially given.
To summarize, you have nothing to lose by having PSA tests. It will be up to you to discuss the results with your urologist and decide whether a subsequent biopsy is advisable. Use your computer (or other sources) to find out more about PSA tests and talk to your urologist.