Glutamine aminotransferase 83 Glutamine aminotransferase 49 is abnormal, belonging to the mild elevation of aminotransferases, common causes include prolonged late-night stay, pharmacological factors, viral hepatitis, alcoholic hepatitis and so on. Alanine aminotransferase and glutamic acid aminotransferase are clinically known as alanine aminotransferase and aspartate aminotransferase, and the normal reference range is 0-40U/L. Different hospitals may have different reference ranges due to the difference in examination equipment. Alanine aminotransferase 83 U/L and aspartate aminotransferase 49 U/L are mildly elevated aminotransferases. There are various possible reasons for elevated transaminases in clinic, mostly seen in liver diseases, such as viral hepatitis, alcoholic hepatitis, fatty liver, liver cancer, etc. Due to the destruction of liver cells, transaminases are released into the blood, which in turn leads to the elevation of transaminases in the blood; in addition, prolonged staying up all night and drinking a lot of alcohol may also lead to the elevation of transaminases in the liver. If you find elevated transaminases, it is recommended to go to a regular hospital for further examination to clarify the cause and timely treatment.