Diagnosis of chronic gastritis typically involves a combination of clinical evaluation, laboratory tests, and imaging studies. Endoscopy is a key diagnostic tool, allowing direct visualization of the stomach lining and the ability to obtain biopsies for histological examination. Other diagnostic methods may include blood tests to check for anemia and antibodies, stool tests for Helicobacter pylori antigens, and urea breath tests to detect Helicobacter pylori infection.
