Abstract: Disclosed are methods, systems and kits for rapid measurement of fecal NGal levels. The present invention provides a rapid measurement system with fecal sample collection, analyte extraction and immunochromatographic measurement of NGal levels, which can be used for diagnosing and monitoring gastrointestinal inflammation diseases such as chronic inflammatory bowel disease. In addition, the present invention provide a rapid test system for measuring different species of NGal, including total NGal, full-length NGal, C-terminal NGal fragments, N-terminal NGal fragments, and NGal fragments containing a specific region of an NGal molecule.