The Helicobacter Pylori (H. Pylori) IgG Antibodies Test measures the level of antibodies against H. Pylori in the blood. This test helps in detecting an infection caused by the Helicobacter Pylori bacterium, which resides in the digestive tract. H. Pylori is a common cause of peptic ulcers in the stomach and upper part of the small intestine, and can also lead to inflammation of the stomach lining (gastritis). A positive result indicates the presence of an active or past H. Pylori infection, which may require treatment to prevent complications like ulcers and gastric issues.