<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Doctor , may i ask you about the kidney failure topic ? My husband has a kidney failure and his kidney function is only 22. When he will go for a dialysis ? What percentage of kidney function will he be to have a dialysis ? And what s gonna happen if he don t go for a dialysis ? And when can he have a kidney transplant ? And can a person live longer if he has a kidney failure ?  <response>: HelloThanks for query. Your husband has Chronic Renal Failure with kidney function of 22. The main function of the kidney is to eliminate end product of protein metabolism CreatinineNormal creatinine level is 0.8 to 1.2 mgWe advise dialysis when serum creatinine levels goes above 7 -8 mg. It is very difficult to predict the life span of a patent as they are more prone to get any other illness easily. Left untreated the life span of the patient is very short say 1-2 years. Chat Doctor. 