Gastric Alimetry is a noninvasive test designed to help diagnose stomach problems. The test involves placing a sticky patch of sensors and a recording device onto the skin overlying the stomach. Gastric Alimetry is able to read the activity of the stomach through a technology called Body Surface Mapping. The data allows doctors to see patterns that may relate to various symptoms. Array During the test, patients also record their symptoms into an App, which gives doctors a clearer understanding of what problems patients are experiencing.