At 65 it was going to rise to rise anyway due to your age. We do not worry unless the PSA goes up two points in a year. However, if you did ride 24 hrs before the test, the pressure on the perineum may have elavated the PSA, or if you ejaculated within 24 hrs it will also cause it to go up a little (sorry about the candor). I would not worry as long as the PSA is below 4.0.