PLE-1547

A 65-year-old male heavy smoker presented with a 5-month history of vague epigastric pain and nausea, associated with weight loss and pruritus. Lately, the patient has also started to experience back pain and appeared jaundiced. On physical examination, you note icteric conjunctivae and epigastric tenderness. An abdominal ultrasound reveals a pancreatic head mass. Which of the following is not an expected result of biochemical testing?