The five liver tests that patients refer to mainly include glutathione, glutamic aminotransferase, and bilirubin, including total bilirubin, direct bilirubin, and indirect bilirubin. If the patient is doing a screening test, these five items are sufficient. However, if the patient is having a normal physical examination, it is still recommended to check the full liver function or 15 liver function items. Such tests contain items such as albumin, alkaline phosphatase, GGT, cholinesterase and other results, which can reflect the liver condition more comprehensively. If a normal patient has elevated glutathione and glutamic oxalacetic aminotransferase, it indicates that the patient has liver function impairment, and it is necessary to further determine whether the liver function impairment is transient or organic. If a patient with hepatitis has the above-mentioned condition, he needs to further check the hepatitis B DNA to see whether the virus has replicated and whether the patient is in a situation of elevated glutamic acid and glutamic oxalacetic aminotransferase, and if there is an elevation of both, antiviral treatment should be actively considered.