I have been taking creatine for sport and recently had a blood test which showed a gfr of 61. I had been told by one gp to return for a blood test in a year. However another gp has suggested stopping creatine supplementation for 3 weeks, drinking lots of water and reducing protein intake and then redoing the bloods to see how my kidney function is. Has anyone experienced gfr to then dramatically increase after stopping creatine supplementation? I have read creatine and exercise can affect gfr readings but I am unsure to what extent.
I’m 33 and don’t have any other conditions such as diabetes or high blood pressure. My blood test was done after a 12 hour fast. The gp did mention that there were a couple of indicators slightly elevated that might suggest id recently had some sort of infection.