<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, I am a 62 year old female, 165 pound that had breast cancer with chemoradiationmasectomy. 2 years later a stem cell transplant for MDS. My doctor tells me today that my kidneys are functioning 45-50 and my kidneys are equivalent to an 80 year old. What am I to do? I am on Crestor, Paxil, Xalatan and Vitamin D3 and Caltrate 600.  <response>: Hello and welcome to Chat Doctor. As a Urologist, i can understand your anxiety.Youve not written how long back you had the stem cell transplant. Also, which report showed the kidney function at 50. An isotope scan or a contrast CT scan CENT,shouldve have been done. Your blood creatinine, urea,electrolytes, RBS,LFT and platelets are tested. This change doesnt occur over a few days. Its gradually progressive. If needed, a kidney biopsy is done to find out cause for decreased function. Send the reports to me, as a direct question, for an expert opinion. Chat Doctor. Manga. 