The normal range of γ-glutamyltransferase is 0~50U/L. 55U/L is mildly high, which is abnormal and may be caused by physiological reasons or due to diseases. Physiological reasons are more common, such as drinking a lot of alcohol, staying up all night, overwork, etc., which may lead to a mild increase in gamma-glutamyltransferase, but usually after adjustment, it will gradually return to normal. In addition, it may also be caused by diseases, such as alcoholic liver disease, viral hepatitis, drug-induced liver injury, autoimmune liver disease, etc., due to the occurrence of liver dysfunction will often lead to γ-glutamyl transferase elevation. Gamma-glutamyltransferase 55U/L is not obviously elevated at present, it is recommended to review regularly, if discomfort occurs, it is recommended to consult a doctor in time, under the guidance of the doctor for targeted treatment.