Usually they test for this in people with Upper GI problems as it lives in the stomach lining. (so symptoms of ulcers, or gastritis, or heartburn, pain up by the chest, for me it was more of a hunger pain that wouldn't go away even when I ate).I got tested for it when I had gastritis symptoms (the unending hungar with some heartburn thing) but I didn't have it. We think my symptoms were from too many NSAID's that I needed to take.K.