Creatinine 239 is not able to judge how many stages of chronic kidney disease a patient is in, because chronic kidney disease is staged by glomerular filtration rate or endogenous creatinine clearance. If there is only one creatinine value through the formula to calculate the endogenous creatinine clearance rate to be affected by the patient’s weight and age, this time it is not good to judge. How chronic kidney disease is staged is by glomerular filtration rate or creatinine endogenous creatinine clearance. In stage I of chronic kidney disease, the endogenous creatinine clearance or glomerular filtration rate is roughly >90mL/min, in stage II of chronic kidney disease the glomerular filtration rate is in the range of 60-89mL/min, in stage III of chronic kidney disease the glomerular filtration rate is roughly 30-59mL/min, in stage IV of chronic kidney disease the rate is 15-29mL/min, and in stage V of chronic kidney disease the rate is <15mL/min, and the rate is generally <15mL/min. If there are symptoms of uremia, such as nausea, vomiting, poor appetite, and heart failure, such as chest tightness, shortness of breath, dyspnea, then renal replacement therapy should be carried out. There are two modes of renal replacement therapy at present, one is hemodialysis, the other is peritoneal dialysis. At the same time, it is also necessary to actively treat the systemic complications caused by the uremic stage of chronic kidney disease, such as high phosphorus, low calcium, hyperparathyroidism, renal anemia and other related treatments.