GPT and obstructive jaundice: Bloodwork demonstrated obstructive jaundice with total bilirubin 178 μmol/L, aspartate aminotransferase (AST) of 220 U/L, alanine aminotransferase (ALT) of 532 U/L, alkaline phosphatase (ALP) of 668 U/L, amylase of 68 U/L, hemoglobin of 144 g/L, white blood cell count of 3.9 x 109/L, platelet count of 167 x 109/L, international normalized ratio (INR) of 1.01, and normal electrolytes and creatinine.