Blood creatinine varies a little bit every time you check because creatinine is divided into endogenous and exogenous, endogenous is relatively stable, and exogenous is affected by diet, exercise, drugs, etc. Creatinine is a metabolic waste product of the body, which is mainly produced by muscle metabolism.
Creatinine is a metabolic waste product of the body, endogenous is mainly produced by muscle metabolism, so the amount of creatinine produced every day is relatively constant.
Exogenous creatinine is affected by a variety of factors. After consuming large amounts of meat, after strenuous exercise, and after the use of certain drugs such as cimetidine, ethylaminopyrimidine, and methotrexate, creatinine secretion from the renal tubules can be blocked, thus increasing blood creatinine.
Creatinine mainly reflects glomerular filtration function, and without the influence of exogenous factors mentioned above, changes in creatinine values generally indicate dynamic changes in the disease.
For those with high or unstable creatinine, it is recommended to consult the nephrology department of a regular hospital for further investigation of urea, cystatin C, glomerular filtration rate, etc. to assess the condition, and if necessary, perform renal puncture biopsy to clarify the cause of the disease. The above medication should be used in accordance with the doctor’s prescription, and should not be used without authorization, so as not to aggravate the condition.