The upper limit of the normal value of glutathione is usually not more than 40 U/L. When the value of glutathione reaches 65 U/L, it is not normal. A value of 65 U/L of glutathione is not significantly elevated and does not exceed twice the normal value. Therefore, it may also be caused by certain physiological factors, such as drinking alcohol or eating a lot of high-fat food before performing a liver function test such as glutathione transaminase; the patient engages in strenuous exercise on the day the test is performed. If the patient has recently taken medicine such as cold medicine for many days in a row, it may also cause an increase in the value of GLTA. At this time, the patient does not have clinical symptoms related to liver disease, and there are no abnormalities in liver imaging. Of course, there are many liver diseases that can cause an ALT value of 65 U/L, such as alcoholic liver disease, fatty liver, hepatitis B, cirrhosis, etc. In this case, the imaging of the liver will show more obvious changes and the cause needs to be further clarified. It is important to note that a GTA value of 65 U/L only indicates the presence of liver cell damage and does not determine the type and severity of the liver disease.