The purpose of liver function examination is to detect whether the liver has disease, the degree of liver damage and find out the cause of liver disease, judge the prognosis and identify the cause of jaundice.There are a lot of indexes related to liver function, such as ALT, AST, Tbil, Dbil,ALP, γ-GT, CHE, TP, ALB, TBA, AMM, CG, AFU, ADA, PA, 5′-NT, MAO, LAP.