GPT and Hyperbilirubinemia: Laboratory evaluation demonstrated marked aminotransferase elevation (aspartate aminotransferase: 525 U/L and alanine aminotransferase: 639 U/L) with mild hyperbilirubinemia (total bilirubin: 2.1 mg/dL), and aminotransferases peaked above 800 U/L during hospitalization.