Sydrock, I was diagnosed with late stage kidney disease in December '08 with 23% function remaining a week after failing one of my annual physicals for high BP (it was a huge shock to say the least). Was flying for a 121 carrier at the time. I was content to just wait until a transplant to consider returning to work but was told by my regional flight surgeon to go ahead and apply before the transplant. I did and after about 3 months had not received a decision yet when I decided to go ahead with the transplant (which of course started a whole new application process). My point is, I had end stage renal disease that was continuing to progress at a slow rate, and to top it off the actual cause of the failure was unknown, and they STILL told me I could possibly get my medical back prior to transplant. I'm now about 2 1/2 weeks into them having my new info from the transplant I received in March of this year.
Good luck to you in the future with your Glomularonephritus. It's amazing what they can do for these things these days. I only wish they had caught mine sooner.
If you have any questions about how the process went for me feel free to PM me.