Diseases that affect the gastrointestinal system are caused by a host of bacterial, viral and parasitic organisms that cause gastroenteritis, an inflammation of the gastrointestinal tract involving both the stomach and the small intestine. When symptoms point to a possible gastrointestinal infection, diagnosis can be confirmed through laboratory tests that include detecting antigen in stool specimens or antibodies circulating in the blood. In certain settings where a potential for epidemic outbreaks exists, rapid diagnosis provides important information for implementing infection control measures. CTK offers tests for a full range of gastrointestinal diseases to allow rapid, differential diagnosis of diarrheal diseases..