A 65 year old man presents with periumbilical abdominal pain which often radiates to theback. The pain has been present intermittently for over 3 years. Approximately 5 years
ago he stopped drinking alcohol heavily. He used to drink two six-packs of beer daily,
more on weekends. His physical exam is unremarkable. An abdominal CT scan reveals
occasional small pancreatic calcifications. An endoscopic retrograde
cholangiopancreatography shows a dilated, irregular pancreatic duct with dilated side
branches.
Which of the following tests will most likely be abnormal in this patient?
