@rick37 @gingerw

You are minutes away from making video calls to Mayo Clinic to get multiple second opinions. It may be worthwhile to talk to a professional as we here are informed about our own experiences and try to pass it on. I would highly recommend that you follow @gingerw as over the years, her concern for helping others in the area of chronic kidney disease is quite valuable. Add to that is @cehunt57 and others. First, for a type 2 diabetic, your A1C is fine as long as you keep it less than 7, and test regularly at about every 3 months, and perhaps see an endocrinologist. Second, you have not said anything about your colorectal surgeon or gastroenterologist as this could be an underlying issue of your current chronic kidney disease. Also, the appliance that you wear may be outdated or not working as well now after 40 years. Dehydration is a leading cause of low eGFR. Third, seeking a dietitian could be quite valuable to you related to diet, exercise and lifestyle. Lastly, understand the different tests for checking the function of your kidneys and keep track of it. Docs look at trends and not one point in time. Understand the differences of creatine eGFR and Cystatin C eGFR, as well as iothalamate and iohexol testing to determine accurate kidney function in both kidneys. In my opinion only, you appear to have underlying issues which are affecting your kidney problems. Solve that first and best of luck to you!