Born with one functioning kidney, I'm a 58 year old male. In January my gfr was down to 38 and creat up to 1.86. So my PCP referred me to a nephrologist for the first time.
Since January, I've educated myself on how much sodium I was consuming without realizing it. So now my blood test results last week were the same as they were in June - gfr 52 now, 51 in June, creat 1.38 now, 1.37 in June. Now I track my sodium intake every day, staying around 2000 mg daily and continue my usual exercise. It seems to be working.