A 45-year-old male presents with severe epigastric pain radi…
A 45-year-old male presents with severe epigastric pain radiating to the back, nausea, and vomiting for 12 hours. He reports recent heavy alcohol intake. On exam, he is afebrile, HR 102, BP 138/84. You suspect acute pancreatitis.Which of the following laboratory tests is most essential to confirm the diagnosis?