The severity of the disease cannot be judged clinically by the value of glutamyl transpeptidase alone. The normal value of glutamyl transpeptidase does not exceed 54, and when the value reaches 67, it is only mildly elevated. In this case, it may be caused by physiological factors, such as drinking alcohol and eating high-fat food, which are not serious and can return to normal on their own after removing the triggers, and sometimes clinical treatment is not needed. Of course, it may also be caused by liver diseases, such as acute and chronic hepatitis and cirrhosis, which cause mild elevation of glutamyl transpeptidase. And these diseases will not cause serious consequences when the disease is stable, but if the disease progresses faster, it may also cause liver insufficiency or portal hypertension, which may cause serious complications such as hepatic encephalopathy, hepatorenal syndrome, upper gastrointestinal bleeding and endanger the life of patients. Of course, primary liver cancer and early stages of biliary obstructive disease may also cause mild elevation of glutamyl transpeptidase. Although the elevated value is not obvious, primary liver cancer, bile duct cancer and pancreatic head cancer are very malignant digestive system tumors, which have a very obvious impact on the survival of patients and are also a very serious disease.