Resolved How to reduce creatinine level

Sir, since 35 years I am on one kidney and I have regularly testing my creatinine level ,15th April it was 1.19 to day i got it tested it is 1.34 .I was feeling some sort of pain in kidney region since last few days and also abdomen. I consulted gestroentalagist and he sujjested CT scan and after verification he said every thing is normal including kidney. But just to confirm I got the test at RV lab and result urea 29 and creatinine 1.34 .can you kindly advise suitable medicin