The normal reference range for glutamic oxalacetic transaminase is generally 0-40 U/L, which may vary depending on the test method and requires reference to the reference range on the back of the local test report. Glutathione is an enzyme that is widely present in the body, mainly in cardiac muscle cells, skeletal muscle cells, liver cells and so on. Under normal conditions, its concentration in the body is maintained within a certain range. When cell damage and necrosis are caused by various reasons, it can cause an increase in the blood concentration. The examination of peripheral blood is useful in guiding doctors to detect and diagnose diseases. For example, when cardiomyocytes are necrotic, elevated glutathione can be found in the blood; when hepatitis is present, liver cell destruction is damaged and glutathione can be elevated. After effective etiological treatment, its concentration in the body will drop to normal, which helps to guide the effectiveness of disease treatment.