Usually, the normal values of blood creatinine at the age of 60-70 years are 53-106 μmol/L for men and 44-97 μmol/L for women. However, for the elderly, due to the decrease in renal function as well as the decrease in muscle mass, the upper limit of the normal values of blood creatinine at the age of 65 years and above can be adjusted to 88.4 μmol/L. However, due to the difference in the reagents and the testing methods used in each hospital, the normal ranges of creatinine may also vary.
Creatinine is the metabolic end product of creatine in muscle tissue. Creatinine does not bind to protein in the blood and can pass freely through the glomerulus, making it the most commonly used indicator to indirectly reflect glomerular filtration function. When the glomerular filtration function is impaired, the body’s serum creatinine may be elevated, suggesting the presence of renal insufficiency.
If patients find abnormal blood creatinine, it is recommended to go to regular hospitals in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.