The nine liver function tests are mainly blood tests to help determine the basic functions and status of the liver, including glutathione aminotransferase, glutamic oxalacetic aminotransferase, total bilirubin, direct bilirubin, indirect bilirubin, total protein, globulin, albumin, ratio of albumin to globulin and other indicators. The above indexes can roughly determine the basic function of the liver. The day before the liver function test, you should fast and abstain from food and water after twelve o’clock in the evening, and go to the hospital in the morning to have your blood drawn on an empty stomach. You should avoid drinking alcohol, staying up late, and strenuous exercise the night before the test, because it may cause abnormalities in the liver function test, and may not truly reflect the basic state of liver function.