Liver function tests mainly look at aminotransferase, bilirubin, albumin, globulin, glutamyl transpeptidase and these indicators. 1. aminotransferase, aminotransferase includes alanine aminotransferase and glutamine aminotransferase, alanine aminotransferase is the most sensitive indicator to reflect liver cell damage, and it is the first one to appear abnormal, when there is inflammation or liver damage, glutamine aminotransferase value will also be elevated. 2. Bilirubin, bilirubin is used to detect whether the bile ducts are clogged or not, if the liver is damaged and the bile ducts are clogged, the bilirubin indicator will rise. 3. Albumin, which decreases when the liver is damaged. 4. Globulin, which rises when the liver is inflamed, and also increases when bile sludge builds up. 5. Glutamyl transpeptidase, elevated glutamyl transpeptidase may indicate sleep deprivation, alcoholic hepatitis, cirrhosis and so on. It should be noted that liver function also needs to pay attention to alkaline phosphatase and other indicators, before the liver function test to keep fasting, fasting and water fasting for more than eight hours, otherwise it may lead to abnormal test results.