Hello Brad-
You seem to be getting ahead of yourself here. Take a breath - slow down.
Before you plan a biopsy, I think you'll want to rule out other sources of rising PSA, like BPH. How big is your prostate? How has your urinary function been? Your PSA is rising very rapidly, and rapid rises like that often indicate prostatitis. You'll want to rule that out too.
I'm surprised your insurance agreed to pay for a PCA3 test before a first biopsy - most won't. Another biochemical test that insurance probably will cover is PHI. It includes both PSA and % free PSA. Your urologist can order one at the following:
/www.accureference.com/phi/With very rare exceptions,
all of the biochemical tests are more likely to be a true positive if one has more aggressive disease (i.e., they are more sensitive to it). But they don't tell one if he has more aggressive disease. Only a biopsy can do that.
Only a third of biopsies are positive, which is why getting an MRI first is probably not a good idea. Save it for if suspicion still remains after a negative first biopsy, or if you need it for treatments like active surveillance or radiation planning.
It's way premature to discuss treatment options before you even have a diagnosis.