Someone correct me if I'm wrong but the decision for active surveillance is based on Gleason score, not PSA level. Surveillance is most commonly recommended with a Gleason score of six (3+3) You said your husband had a biopsy and should have been provided his score. My biopsy showed Gleason 3+4. If you search Gleason score you can learn the risk factors and recommended treatments for the different numbers (3,4 or 5). The score will have two numbers, with the first showing the stage of the most abundant cancer cells and second number showing the stage of the lesser abundant cells. My score showed I had more 3 than 4 development. Your husband's Urologist should have explained all this.