Your 32-year-old female patient is undergoing evaluation because of a several-month history of diarrhea, a 5-pound weight loss, and abdominal pain and bloating following meals. Which of these is the most appropriate single diagnostic test for this patient’s condition?

The previous patient has a positive tissue transglutaminase (TTG)-IgA result. Which of these is the most appropriate next step to confirm the diagnosis?

Your new patient is undergoing evaluation because of a self-diagnosis of celiac disease. She states she has been adhering to a gluten-free diet for the past 2 months. Which of these is the most is the appropriate testing strategy for this patient?

Which of these conditions should be met before surgery should be be performed to correct small bowel obstruction (SBO)?

The previous patient states that he wants to go home because he has “a lot of important things to do.” Which of these is the most appropriate next step in this patient's treatment plan?