Hello
What I understand is that if you have a creatin level of 7 or higher, it is usually recommended that you start dialysis treatments. After this is done that person will feel much better. I do not know of any specific level equaling death. He is probably very tired and feeling run down at this time. The best thing to do is consult with a doctor about his kidney function, and needed treatment.
Don
creatinine levels 
Linear Mode
