Causes of Elevated Alanine Aminotransferase (ALT)
Disease description:
I recently went to the hospital for a liver function test, and the results showed that my alanine aminotransferase (ALT) level is elevated. What could be causing this?
Doctor's answer (1)
Dr. Pan Guozheng
Hello! Alanine aminotransferase (ALT) is predominantly found in the liver, with smaller amounts present in skeletal muscle, kidneys, and cardiac muscle. Elevated serum ALT levels indicate significant hepatocellular injury. Persistently elevated ALT suggests ongoing hepatocellular damage, which may progress to chronic hepatitis. Common causes of elevated ALT include:
1. Liver diseases—such as alcoholic liver disease, fatty liver disease, cirrhosis, and hepatocellular carcinoma;
2. Cardiac conditions—including acute myocardial infarction, myocarditis, and heart failure;
3. Infectious diseases—such as pneumonia, typhoid fever, tuberculosis, and infectious mononucleosis;
4. Medication use—certain drugs may cause hepatotoxicity.
I hope this information is helpful to you. Wishing you good health!
