H. pylori Antibody Blood Test (Helicobacter pylori IgG)

The H. pylori Antibody Blood Test (Helicobacter pylori IgG) is a simple blood test that checks whether your immune system has produced antibodies against Helicobacter pylori, a common bacterium that can colonise the stomach lining. It is suitable for adults and older children who have persistent or recurring indigestion, bloating, upper abdominal discomfort, nausea, or other digestive symptoms that may be linked to this infection. It can also be useful if you have a family history of gastric problems or if your doctor wants to investigate possible causes of long-standing stomach complaints.

What the test measures

• Helicobacter pylori antibody (ANTI-HP): This marker detects IgG antibodies directed against H. pylori. A positive result indicates that your immune system has been exposed to the bacterium at some point, which can help your doctor decide whether further investigation or treatment is appropriate.

Why it matters

H. pylori infection is very common and is recognised as an important cause of chronic gastritis, peptic ulcers, and some stomach cancers. Many people carry the bacterium without obvious symptoms, while others experience significant digestive discomfort. Identifying exposure through this blood test gives you and your doctor a clearer picture of whether H. pylori could be contributing to your symptoms. If antibodies are present, your doctor can discuss appropriate next steps, which may include additional testing or a course of treatment to clear the infection. Taking this test is a straightforward way to gain useful information about your gastric health and to support timely, targeted care.