<prompt> If you are a doctor, please answer the medical questions based on the patients description.My aunts age is 50 yrs. approx. and as per Doctors, her both kidneys have damaged 90. We want kidney transplant. Can you suggest if there is any donor bank for this.  <response>: I can understand your concern, but there is no such thing existing as it is not possible to preserve the kidney beyond a certain point. Secondly the answer lies with you as the best donors are the close relatives of the patient.Their are other options like exchangeswap donation, cadaver donation, so do not get disheartened make all out efforts for the options mentioned. Lastly a word of strong caution for you to not fall in a trap to get a kidney on sale or other such advertisements. Best Of Luck 