Lab test

H. Pylori IgG Testing - Helicobacter Pylori

H. pylori testing looks for Helicobacter pylori, a bacterium that can live in the stomach lining and is associated with chronic gastritis and peptic ulcers.

Typical price

From $48

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

H. pylori testing looks for Helicobacter pylori, a bacterium that can live in the stomach lining and is associated with chronic gastritis and peptic ulcers. This test uses two complementary approaches: an antibody test that detects immune proteins against the bacterium in blood, and a stool antigen test that looks for bacterial material in stool. Together they can help assess whether a person has been exposed or may have an active infection. Testing is used for people with persistent upper abdominal symptoms or a history of ulcer disease. Results are screening information and are interpreted by a healthcare provider.

• H. pylori IgG antibodies Immune proteins produced in response to Helicobacter pylori; a positive result can indicate current or past exposure.
• H. pylori stool antigen Bacterial material detected in a stool sample, which can help identify an active Helicobacter pylori infection.

• People with persistent upper abdominal pain, burning, or discomfort
• Individuals with bloating, nausea, or unexplained indigestion
• Those with a history of peptic ulcer or chronic gastritis
• People whose healthcare provider wants to evaluate a possible H. pylori infection
• Anyone who needs follow-up after earlier stomach findings

• No fasting is required for the H. pylori antibody test
• A stool sample is collected for the antigen test; follow the lab's collection instructions
• Antibiotics, bismuth, and acid-suppressing medications can affect the stool antigen test, so follow your healthcare provider's guidance about timing
• Tell the lab about medications and supplements

A positive H. pylori antibody result may indicate current or past exposure, since antibodies can persist after an infection clears. The stool antigen test can help show whether an active infection is present. A negative result generally suggests the bacterium was not detected, but timing and medications can affect accuracy. Because these are screening tools, results are interpreted together rather than alone. Discuss your H. pylori results with a healthcare provider, who can decide whether further testing is needed.

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