what is the level of creatinine that can cause an individual go into comatose? My mother in law is at the ICU and has full blown kidney failure. And her creatinine level has reached to over 6.0. When she was in the ER, it was 3.2 Fridays ago. My husband is in the process of making a decision to remove the respiratory tubes, and he can't make that decision until she slips into coma. Right now, they are making her comfortable and can't treat her. They advised against dialysis because she has no muscle mass and has multiple problems. She has no muscle in her diaphram which is why she is on life support indefinitely.