Dr Old School, welcome to hpthe forum, hope you are just passing through and don't become a permanent member.
It would be highly unusual at your age to be diagnosed with prostate cancer. But not impossible. First thing is the advice Jeff gave you above. Aside from the proper prep for PSA blood draw though, it seems like something is going on, could be a lot of things, not just cancer.
Seems like the antibiotic not doing much to lower your PSA would rule out infection.
I think it's good that you are seeking out a new URL, and I wouldn't let your current uro do the biopsy. If God forbid it comes back positive, the last young in the world you want is a desensitiEd Iro that won't let you ask questions. Howebpver this turns out, you want someone who will give you clarity.
If you could arrange for an MRI guided biopsy, it would probably be best. The MRI will highlight areas of interest from which they will take extra samples. Vs a traditional "blind" biopsy which just takes a small amount of tissue from random places in different areas of the prostate and can easily miss something.
But let's hope it doesn't come to that.
Btw, I doubt that episode of back pain you had was in any way related to prostate cancer. And it leads me to believe, that there is a decent chance this whole thing is something not related to cancer.
Others will chime in, and keep in mind I'm nit the most knowledgeable guy here, just a guy with some experience. And also keep in mind that nobody here is a doctor.
Good luck, please keep us posted.
Age 64 (in 2014), PSA Feb 2006 - Nov 2014, PSA rose from .7 to 4.3
Nov 2012 - Biopsy - 14 cores all negative for PCa, 1 showed Hi Grade PIN
Nov 2014 BX 3 of 12 cores positive original pathology G6 10%, G6 20%, G8 (3+5), 70%.
G3+5=8 downgraded to 3+3=6 @80% by Dr Epstein, JH
Surgery with Dr Ash Tewari Jan 6, 2015
Post surgical pathology – G7 (3+4), ECE, Margins, LN, SV all negative
PSA @ 6 weeks 2/15, .<02, 4/15 <.02 7/15 <.02
My Story: tinyurl.com/oo9x4aq