Usually creatinine 104μmol/L is normal for adult males and mildly elevated for adult females, and attention should be paid to finding the cause of the elevation. However, the reference value varies slightly from hospital to hospital, so it is recommended to use the reference value of the laboratory in the local hospital. In China, the range of creatinine value for adult men is 53~106μmol/L, and for women is 44~97μmol, so creatinine 104μmol/L is normal for adult men, and for women it is mildly elevated. However, the reference value varies slightly from hospital to hospital, so it is recommended that the laboratory reference value of the local hospital should prevail. In addition, due to the lower muscle content and lower exercise level of the elderly, creatinine 104 μmol/L is considered high for the elderly. It is recommended that patients with abnormal creatinine should go to the hospital in time, complete the relevant examinations under the guidance of the doctor, and take active treatment.