A barium swallow is an imaging test that assesses the esophagus and upper GI tract. During this procedure, a person drinks a liquid that shows up clearly on X-rays. This substance coats the esophagus, enhancing the visibility of any abnormalities, like ulcers, tumors, strictures, or swallowing difficulties.

PREPARATION:

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