100. A 39-year-old patient presents to the ED with a one-day…
100. A 39-year-old patient presents to the ED with a one-day history of right upper quadrant pain, nausea and one episode of vomiting. The pt has no prior medical history. A right upper quadrant ultrasound is indicative of cholecystitis. Labs are the following WBC 11, Bun 40, Cre 1.1 ALT 189 AST 275. The pt undergoes an ERCP. Overnight the patient developed a low grade 100.9 and complains of increased epigastric pain that is now band like in nature. What is the most appropriate lab to obtain for this patient?