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Upper GI exam. Definition. An upper GI examination is a fluoroscopic examination (a type of x ray imaging) of the upper gastrointestinal tract, including the esophagus, stomach, and upper small intestine (duodenum). Purpose An upper GI series is frequently requested when a patient experiences unexplained symptoms of abdominal pain, difficulty in swallowing (dysphagia), regurgitation, diarrhea, or unexplained weight loss. It is used to help diagnose disorders and diseases of, or related to, the upper gastrointestinal tract.
Back to Top How the Test Is Performed. An upper GI and small bowel series is done in a doctor's office or hospital radiology department. You may be given an injection of a medicine that slows muscle movement in the small intestine. This lets the doctor see structures can be more easily on the x-rays.n x-ray method called fluoroscopy tracks how the barium moves through your esophagus, stomach, and small intestine. Pictures are taken with you in a variety of positions. You may be sitting or standing. The test usually takes around 3 hours but can take as long as 6 hours to complete.