An upper gastrointestinal series is an imaging test that assesses the esophagus, stomach, and duodenum. During this procedure, a person drinks a liquid that shows up clearly on X-rays. This substance coats the esophagus, stomach, and duodenum, enhancing the visibility of any abnormalities, like ulcers, Gastroesophageal reflux disease (GERD), inflammation (esophagitis, gastritis, or duodenitis), or infection.

PREPARATION:

No eating, drinking, chewing gum or smoking after midnight the night before the exam.