Normal glutamic oxaloacetic aminotransferase and chronically high glutamyl transferase may be related to factors such as late night exertion, liver injury or bile duct obstruction. 1. Staying up late and working hard: some people have poor living habits and often stay up late and work hard, which may lead to abnormally high glutamyltransferase, but glutamic oxalyltransferase and glutamic propyltransferase may be within the normal range. 2. Liver injury: when there is acute and chronic hepatitis or fatty liver, cirrhosis and other diseases, liver tissue cells will have different degrees of damage, and sometimes there will be normal glutamic oxalate and glutamic acid transaminase and glutamyltransferase for a long time on the high side. 3. Bile duct obstruction: If there are stones or inflammation in the bile duct, it may lead to bile duct obstruction, and then glutamyltransferase may continue to rise, while glutamic oxaldehyde and glutamic acid transaminase may be normal. Glutamic acid and glutamic acid transaminase are normal but glutamyl transferase is high for a long period of time, it may be due to various conditions, you need to consult a doctor for examination, you should pay attention to the diet, you can follow the doctor’s advice to take diammonium glycyrrhizinate and other liver-protecting medicines and actively treat it, it can be slowly returned to normal.