GPT and obstructive jaundice: Bloodwork during this presentation showed recurrent obstructive jaundice with total bilirubin of 74 μmol/L, AST of 178 U/L, ALT of 307 U/L, ALP of 644 U/L, hemoglobin of 135 g/L, white blood cell count of 17.0 x 109/L, platelet count 214 x 109/L, and normal electrolytes, creatinine, and amylase.