<s>[INST] Dear Dr. Grief, My papa is 73 yrs old and has renal failure as his creatinine levels in the blood are very high ranging from 3.8-5.8 mg/dL. He needs dialysis every alternate day and has been in the intensive care unit for ~ 3 weeks. Will his kidneys recover?. The urine output is normal but the filtration capacity is not restored. Can you suggest??? [/INST] Hello SABENA, your father has renal failure, we have to differentiate if it is Acute renal Failure (which can recover) or a chronic renal failure which is not likely to recover. Secondly what is the cause of renal failure. These can be judged on the basis of duration of illness any serum creatinine report 2 months back, urine routine findings, and ultrasound kidney size. Also whether he is diabetic. After assessing all this data only one can comment the chances of recovery. If no improvement occurs in 2 to 3 months time then it is unlikely to improve hope this helps. </s>