Posted 10/14/2019 9:13 AM (GMT -7)
Normally it takes a few to several years to reach the true PSA nadir following radiation as a primary initial treatment. During that time it is also normal to see some bouncing around in the 18-36 month range, which for you is now. Ideally, after radiation you want to get your PSA under 0.50. It is not too late for that to occur, it just hasn't. Your nadir thus far is 1.3 and technical recurrence is determined at nadir plus 2.0. Right now for you that would be PSA of 3.3. While you are G6, you had a good amount of involvement. Most often the G6 wont cause problems, but you should never trust it. Also you still have your prostate that is expected to express some PSA as well as any possibility of prostatitis or even treatment iritation, which you could have.
All you can do is what you are doing. Be concerned, but not worried, and attempt to determine whether this is a new normal without cancer, or if there is something nefarious at work that needs some clean up.