When I was diagnosed with kidney disease, I was one step into stage 5 kidney failure where dialysis is considered. However there were very few outward signs. Even my PCP was not expecting it when he ordered a standard lot of tests. Our bodies don't always have clear signs of things going wrong. Make sure to have regular checkups.
IT was only when I was having an untrasound that the problem in the kidney was found and I had a couple of decades of managed decline before I went on to the transplant list.