<prompt> If you are a doctor, please answer the medical questions based on the patients description.What is a healthy FGR for kidney function and creatine reading. I am a 72 year old male  <response>: Hi, welcome to Chat Doctor. Normal GFR is 125mlmin1.73m2 BSA. It decreases with age, especially after 40 years of age. S.creatinine varies considerably depending upon age, gender, diet, mobilisation and Chat Doctor. But, it is a simple way to calculate EFR. So, measure your S. creatinine and consult your nephrologist, or you can communicate with me also. I think this would be helpful to you. Best wishes. TC. 