GGT, also known as glutamyl transpeptidase, is an important indicator of liver function. The normal value of glutamyl transpeptidase is 0~50U/L. If the test result is significantly higher than normal, it indicates abnormal liver function, which is mostly seen in liver diseases or bile duct blockage. Common diseases include acute hepatitis, chronic hepatitis, fatty liver, alcoholic hepatitis, drug induced liver injury and liver cancer. In addition, gallbladder stones, cholecystitis, and bile duct obstruction can also affect the excretion of glutamyl transpeptidase, resulting in increased values. If you find that glutamyl transpeptidase is elevated, you need to go to the hospital in time for the appropriate examination, to clarify the cause of the disease, and actively treat the cause of the disease.