There are four ways to test for H. pylori: a urea breath test, a stool antigen test, an upper endoscopy, and a blood test. However, Cummings said the blood test is rarely used in the U.S. because ...

I was tested for H. pylori, which was positive and was prescribed ... The bacteria can be diagnosed through blood, stool, breath tests, or endoscopy. Blood tests, which are the most commonly ...