The normal range is 0-40 U/L. If it is 12 U/L, it is a normal test and has no clinical significance. If glutamic oxalacetic transaminase exceeds 40 U/L, and except for physiological factors, it suggests that the patient may have damage to the liver cells. Low GTR is usually affected by diet and exercise, and may occur when eating spicy, greasy and stimulating foods or when there is a nutritional imbalance, and may also occur when the body lacks exercise and has a slow metabolism. In addition, low glutathione may also indicate abnormal metabolism and absorption in the body, but low glutathione is generally not of great clinical significance. Patients are usually advised to pay attention to the combination of meat and vegetables, abstain from smoking and alcohol, eat less spicy and oily foods, eat more foods rich in fiber and vitamins, eat appropriate coarse fiber foods, and maintain a regular diet and balanced nutritional intake. You can also do outdoor aerobic exercises, such as climbing, jogging, swimming, etc., which are good for your health, and then recheck glutathione transaminase after a period of time, it may return to normal value. In addition, a good habit of regular medical checkups is beneficial to the early detection and treatment of diseases.