You may not be able to
have the test, or the results may not be helpful, if you just had another test that uses barium
contrast material. An upper gastrointestinal endoscopy
should not be done less than 2 days after you have a type of X-ray test called an upper gastrointestinal
(GI) series so your doctor can see your stomach and small
What To Think About
An upper gastrointestinal (GI)endoscopy is the best
way to examine your esophagus, stomach, and upper small intestine (duodenum).
Your doctor can take a tissue sample to test for H. pylori infection, which is believed to be the main cause of stomach or
duodenal ulcers. To learn more, see the topic Helicobacter Pylori Tests.