48-Hour Bravo pH Study
This is a test that measures the pH in your esophagus and to assess whether acid is coming back into the esophagus from the stomach causing pain, nausea, heartburn, chest pain, etc. This test involves attaching a pH capsule, approximately the size of a gelcap, to your esophagus with the use of an endoscope. The capsule naturally falls off the wall of the esophagus and passes through your digestive tract and is eliminated from the body.