Gastrin 17(G17) CLIA kit (Chemiluminescence Immunoassay) is an in vitro diagnostic quantitative test kit. Gastrin is a major gastrointestinal hormone. G17 issecreted only by G Cells in the gastric antrum, and is abiomarker(G Cells)of the gastric antrum. G-17 is animportant indicator of gastric mucosa injury.