SITZMARKS is a safe and simple initial diagnostic process for patients presenting with constipation or other gastrointestinal (GI) issues. Doing so will allow physicians to provide their patients with a safe and simple test option that has the potential to diagnose or rule out gastrointestinal issues, related to their patient's constipation. SITZMARKS test results can also show early detection of GI motility issues or indication of potentially serious or sometimes life-threatening GI conditions, such as a blockage. This important step in a physician evaluation provides both the physician and their patient the opportunity to discuss and agree on the best treatment options.