On the third hospital day at UHID he developed signs of hepatitis; his serum bilirubin climbed to 116.5 μmol/L (conjugated bilirubin 66.9 μmol/L), his aspartate aminotransferase (AST) was 1952 IU/L, his alanine aminotransferase (ALT) was 365 IU/L, and his lactate dehydrogenase level was 2948 IU/L. Here, GPT is linked to hepatitis A virus infection.