What is Gastrin?
Gastrin is a peptide hormone produced by mucosal G cells of gastric antrum. Gastrin levels are pathologically increased in Gastrinoma, Gastric outlet obstruction and Hypo / Achlorhydria. This assay is used to investigate patients with Achlorhydria / Pernicious anemia and Zollinger- Ellison syndrome. The assay is extremely useful in the diagnosis of Gastrinoma