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An upper GI is often performed to screen for things such as blockages, obstructions, etc that may cause Gastroparesis symptoms and slow down emptying. However, if a blockage is the cause, the Gastroparesis symptoms will go away after the blockage has been cleared. Patients who are having an upper GI will be asked to not eat or drink after midnight the night before the test. The day of the test, the patient will be given several cups of barium (contrast) to drink. Then there will be a series of x-rays to look for problems. It can show delayed emptying of barium, although this is not the best way to diagnose Gastroparesis. Often the upper GI is normal and the gastric emptying test is not. The upper GI will screen for ulcers and other GI conditions that may be contributing to the symptoms. http://cancer.duke.edu/pated/Materials/Procedures/BariumX-Ray.pdf
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