Hi!
Your doctor knows that PSA test results alone do not give enough informations to distinguish between benign prostate conditions and prostate cancer. In the past, most doctors considered PSA values below 4.0 ng/mL as normal. However, recent research found prostate cancer in men with PSA levels below 4.0 ng/mL. Your results can be taken as slightly to moderately elevated. Because there is no specific normal or abnormal PSA levels it's up to your doctor to decide if there is a need for biopsy.

You should know that the higher is the PSA test, the more likely is that the cancer is present. Also, I'll noted that some factors such as age can cause PSA levels to fluctuate and it is common to have vary results in different laboratories.

I'll suggest you to make biopsy, because you still have high PSA levels and it is possible for a man to have prostatitis or hyperplasia and to develop prostate cancer as well.