Helicobacter Pylori IgG test is commonly known as H Pylori Antibody IgG test. The test is effective in diagnosing the cause for peptic ulcers in the duodenum or stomach. Chronic gastritis symptoms, gastrointestinal pain and discomfort are diagnosed by H Pylori Antibody IgG test. H Pylori antibody weakens the stomach’s natural protective lining. The gastric acids damage the healthy stomach forming ulcers which lead to stomach cancer. The test not only diagnoses the H Pylori infection caused by the antibody, it also evaluates the effectiveness of the treatment. There are 4 ways to test H Pylori – Antibody test, Stool antigen test, Urea breath test and Stomach biopsy.