I have the same question. My creatinine is 7.0 and BUN is 90. My doc wants me to start dialysis, but I think I feel well enough to postpone it for a while. Some people start at 10 or 15% function so I'm not sure if there is a magic number to start. My doctor personally would like his patients to start when they are at 10%.
I just find it so confusing. I don't know if I should go by the "numbers" or how I feel.