Kidney function creatinine 112μmol/L is normal or not is related to the assay method, the normal value of the picric acid method is less than 133μmol/L, which is normal, the normal value of the enzyme method is 53-106μmol/L for men and 44-97μmol/L for women, which is mildly high, and it is recommended to consult a doctor in time to clarify the cause of the disease. Creatinine in the blood is a product of muscle metabolism in the human body, and the daily production is basically stable. It is mainly filtered through glomeruli and excreted with urine. When creatinine appears to be elevated, in addition to eating a large amount of meat, strenuous exercise and other physiological factors, mostly consider a variety of reasons caused by the glomerular filtration function of the glomerulus is reduced, resulting in the body of creatinine increased. High creatinine should be timely medical care, improve the urine routine, renal ultrasound, urinary CT and other tests, a clear diagnosis, timely treatment in accordance with medical advice.