Strictly speaking, there is no condition called "chronic renal failure stage five," but there is a term "chronic kidney disease stage five." Chronic kidney disease is divided into five stages based on the glomerular filtration rate (GFR). Stage five chronic kidney disease indicates that the patient's GFR is less than 15 milliliters per minute, which is about 15% of normal kidney function and is essentially equivalent to uremia. Therefore, chronic renal failure or chronic kidney disease stage five is very dangerous and can cause many complications. Moreover, this type of kidney failure is irreversible and incurable, and the patient may need to undergo dialysis or a kidney transplant.