An esophageal transit study is a medical test used to evaluate the functioning of the esophagus and the ability to swallow.
During the study, the patient swallows a barium solution, which is a liquid that can be seen on X-rays. As the barium moves through the esophagus, several X-rays are taken to observe the movement and function of the esophagus. The study may also include observing the patient while eating solid and liquid foods to assess swallowing ability and detect any swallowing problems.
The esophageal transit study is used to diagnose a variety of esophageal disorders, including gastroesophageal reflux disease, achalasia, esophageal spasm, and esophageal stricture. It can also be used to evaluate the cause of symptoms such as difficulty swallowing, chest pain, or regurgitation.

