Albumin transaminase 52 U/L is a sign of abnormal liver function. The normal value of alanine aminotransferase (ALT) is 5~40U/L. Elevated ALT can be seen in viral hepatitis, alcoholic liver disease, intra- and extra-hepatic cholestasis. 1. Viral hepatitis: ALT can be mildly increased, if the aspartate aminotransferase (AST) increase is more significant than ALT, it suggests that chronic hepatitis has entered the active stage. 2. Alcoholic liver disease: ALT can be mildly elevated. It is often caused by excessive drinking and manifested as jaundice and ascites. 3. Intrahepatic and extrahepatic cholestasis: ALT is often mildly elevated. The manifestations are itching of the skin, whitening of the stools, etc. 4. Other diseases: progressive myasthenia gravis, pulmonary embolism, shock and infectious mononucleosis and other diseases, ALT can also be mildly elevated. If you find that ALT is elevated, you should go to the hospital in time to clarify the cause of the disease and follow the doctor’s instructions for treatment.