The normal clinical value of urine creatinine fluctuates from 7.1 to 17.7 mmol (equivalent to 7100-17700 umol) for men and from 5.3 to 15.9 mmol (equivalent to 5300-15900 umol) for women in 24-hour urine. If a patient’s urine creatinine is at 7000umol, it is equivalent to being at a normal level. Urine creatinine is also affected by urine, if the urine volume increases urine creatinine will rise, on the contrary urine volume decreases urine creatinine will fall. In addition, urine creatinine is also affected by the glomerular filtration rate, if the endogenous creatinine clearance rate decreases, the urine creatinine will also decrease after the kidney function has been damaged.