Generally speaking, the normal level of blood creatinine is 53~106μmol/L for men and 44~97μmol/L for women, and the standard value varies from hospital to hospital, so you can check the reference value according to your local hospital. Therefore, blood creatinine 131μmol/L is not normal and is mildly elevated.
If it is caused by acute renal failure or physiological conditions such as eating large amounts of meat food, strenuous exercise, etc., it is not considered serious; if it is caused by chronic renal failure, common diseases such as chronic glomerulonephritis, diabetic nephropathy, chronic pyelonephritis, etc., it is more serious and cannot be cured.
However, blood creatinine concentration is affected by uncontrollable physiological factors such as muscle content and age of the body, in addition to controllable exogenous creatinine. Clinically, further calculation of glomerular filtration rate is required for proper assessment of renal function.
It is recommended that people with abnormal blood creatinine should go to regular hospitals for timely consultation, clear diagnosis, and targeted treatment under the guidance of doctors.