Normal values for adult blood creatinine range from 53 to 106 μmol/L for men; 44 to 97 μmol/L for women. The standard value varies from hospital to hospital, you can test the reference value according to your local hospital. Blood creatinine is a clinically important indicator of glomerular function, however, it is not sensitive, early glomerular lesions do not appear abnormal blood creatinine, only when the glomerular filtration rate drops to less than one-third of the normal level, then the blood creatinine will gradually appear to be elevated. So when the blood creatinine is normal, it does not mean that the glomerular function is completely normal. The source of creatinine in the body is mainly muscle metabolism and dietary supplements, while the creatinine in the body will be metabolized by the kidneys and excreted with urine to maintain the dynamic balance of creatinine in the body. When the blood creatinine increases, we should be alert to the possibility of abnormal renal function, should be combined with clinical history and other test results to comprehensively analyze the causes of creatinine abnormalities, it is recommended to consult a doctor in a timely manner to identify the causes, and comply with the doctor’s instructions for treatment.