GPT and hepatitis A virus infection: In addition, our patient's severely elevated AST and ALT levels further decreased the probability of alcoholic hepatitis from being our primary diagnosis, as one would expect aminotransferase levels of 300 U/L or less [7-14]. Other potential causes of hepatitis, including DILI, such as with acetaminophen toxicity, and viral hepatitis such as with hepatitis A, B, and C and EBV, were explored although testing yielded negative results [13-16].