There are two types of aminotransferases, one is called glutamic aminotransferase and the other is glutamic alanine aminotransferase, the usual aminotransferase is glutamic alanine aminotransferase, which is ALT, and AST is glutamic aminotransferase. The high limit is generally about 60U/L, due to the use of the kit is not quite the same, there will be differences, but not higher than 50U / L, 80U / L transaminase is transaminase high. If it is high, it indicates a problem in the liver, such as metabolic problems, as well as viral or alcoholic liver, or inflammation of liver cells caused by drug factors, all may have elevated aminotransferases. However, elevated AST should also be taken with caution, because this is the time to check the cardiac enzyme profile, which has cardiac function in it. But in any case, regardless of the type of aminotransferase elevation, 80 U/L cannot be considered normal.