A creatinine level of 114 μmol/L at the age of 56 is higher than normal and is abnormal. Clinically, it is seen as a physiologic increase and a pathologic increase. Under normal circumstances, the creatinine value for men ranges from 53 to 106 μmol/L, and the normal value for women ranges from 44 to 97 μmol/L. The reagents used in each hospital are different, which may lead to a certain difference in the normal value of creatinine. 1. Physiological increase: seen in a large amount of meat, strenuous exercise, etc., after a light diet, pay attention to rest, creatinine can return to normal. 2. Pathological increase: Pathological increase should first exclude whether there is any damage to the kidney function. Increased creatinine level in the blood suggests that more than 1/3 of the renal units are damaged, which means that the detoxification ability of the kidneys decreases. If the creatinine level in blood is found to be increased, it is recommended to consult the nephrology department of regular hospitals to find out the cause and follow the doctor’s instructions for treatment.