It's a tough call, I don't know his full medical history. If generally he is in great health still, I would get another opinion. I don't know if he was treated prior with antibiotic and the PSA test was re-done or not. If that is not the case, then I would suggest another opinion or ask his doctor about treating with a full course of antibiotics and repeating a PSA test as well. If that has been done already then I would suggest a biopsy then to be on the safe side.
Hope this helps and gives you some ideas in order to decide your next step. If you need anything else please feel free to ask. If you found this helpful don’t forget to click the *accept* button!
