Difference Between H.pylori IGG and IGA | H.pylori IGG vs IGA

Key Difference – H.pylori IGG vs IGA

Helicobacter pylori are spiral-shaped bacteria that cause gastrointestinal infections. H. pylori infection is one of the most common bacterial infection known to mankind across the world. World Health Organization has declared the Helicobacter pylori bacteria to be a Class 1 carcinogen which leads to gastrointestinal cancers and lymphoma. H. pylori cause infection by invading the mucous lining of the stomach and it is also the cause of up to 95% of duodenal ulcer and up to 75% gastric ulcers.

Different tests are performed in order to diagnose H. pylori infection. The types of tests include gastroscopy, urea breath test and stomach biopsy tests. Serology deals with the body’s serum. In the serology test for H. pylori, patients’ blood is screened for the presence of antibodies to H. pylori which indicates an immune response to the bacteria. Two such tests are termed as H. pylori IGG and IGA test. The key difference between H. pylori IGG and IGA is that, in H. pylori IGG test, the presence of Immunoglobulin G is tested in the blood whereas, in H. pylori IGA test, the presence of Immunoglobulin A is tested in blood.


1. Overview and Key Difference
2. What is H.pylori IGG
3. What is H.pylori IGA
4. Similarities Between H.pylori IGG and H.pylori IGA
5. Side by Side Comparison – H.pylori IGG vs H.pylori IGA in Tabular Form
6. Summary