An 8-year-old is accidentally hit in the abdomen by a baseball bat. After several minutes of discomfort, he seems to be fine. Over the ensuing 24 h, however, he develops a fever, abdominal pain radiating to the back, and persistent vomiting. On examination, the child appears quite uncomfortable. The abdomen is tender, with decreased bowel sounds throughout, but especially painful, with guarding in the midepigastric region. Which of the following tests is most likely to confirm the diagnosis?

a. Serum amylase

b. Complete blood count with differential and platelets

c. Serum total and direct bilirubin levels

d. Abdominal radiograph

e. Electrolyte panel

the answer is below…

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