After taking Proscar for 6 months, my last PSA test results were 3.9. I thought this was good but the PA told me they have to double it when you are taking Proscar. They gave me the choice of having a biopsy done or waiting another 6 months for another PSA test. I chose the latter because I had a biopsy done a year ago and they didn't find any cancer. The test was not real bad but quite an uncomfortable procedure. Should I have had another biopsy or waited another 6 months?