my brother suffering kidney problem which findout 15 days ago he aiso diabetes patient since 15 years .his age is 56, height 5 feet & 2 inch, weight 58 kg. his creatinine result is  2.3, hba1c is 6.75. i want know  that is it possiable to improve kidney faunction or suggest me where is best treatment in chanyai or banglor. some of my friends are advise  to go to cmc vellor. we are in bangladeshi so i need cheepest treatment because we are not solvent.we are not relay with our doctor in our country.
Since your brother is a diabetic patient since 15 years, kidney problem is most probably due to poor diabetes control. He needs to be hospitalized since creatinine levels are high. Treatment is good in both Chennai and Bangalore, but I would prefer Bangalore. Go for a Govt setup(treatment will be cheap). Medicines taken for diabetes need to be reviewed and do all the relevant kidney function tests and blood glucose test.