Gastroesophageal reflux disease (GERD) can be thought of as chronic symptoms of heartburn. The term refers to the frequent backing up (reflux) of stomach contents (food, acid, and/or bile) into the esophagus -- the tube that connects the throat to the stomach. GERD also refers to the array of medical complications, some serious, that can arise from this reflux.
Though it causes discomfort, occasional heartburn is not harmful. About 20% of adults in the U.S. experience GERD symptoms such as heartburn...
A few people have GERD that doesn't respond to treatment. Or they may have other concerning symptoms, such as weight loss, difficulty swallowing, anemia, or black stools. If you're one of them, you may need any of the following tests.
Diagnosing Acid Reflux With a Barium Swallow Radiograph
Your doctor may decide to use a special X-ray procedure -- the barium swallow radiograph -- to rule out any structural problems in your esophagus. In this painless acid reflux test, you will be asked to swallow a solution of barium. The barium enables doctors to take X-rays of your esophagus.
Barium swallow isn't a surefire method of diagnosing GERD. Only one out of every three people with GERD has esophageal changes that are visible on X-rays.