Hi David it’s unusual for regular PSA testing. Is there a reason for having them? If so that could influence the process. The two raised results were they also one year apart? Or closer together.
The absolute values are within normal range, but the PSA velocity is dependent on the time between tests. I’m pretty sure if someone without any history of previous results got a sub 4 PSA it would be seen as normal with no further follow up. So if PSA is rising I would ask about PSA velocity and PSA doubling time as these would be important with low absolute PSA values.
Best of luck with the retest.