Test library
H. pylori Infection Test
A laboratory test that looks for evidence of Helicobacter pylori infection, a bacterium associated with chronic gastritis and peptic ulcers, using a stool or blood sample.
Order H. Pylori IgG Testing
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order H. Pylori IgG Testing- Typical turnaround
- 1-3 business days
- Starting price
- From $48
- Results
- Confidential, online
Quick answer
This test looks for signs of Helicobacter pylori, a bacterium that can live in the stomach lining and is linked to chronic gastritis and peptic ulcers. Depending on the panel, the laboratory detects H. pylori antigens in a stool sample or antibodies in blood. Results are interpreted by a healthcare provider alongside symptoms.
What this test measures
Helicobacter pylori is a spiral-shaped bacterium that colonizes the stomach and can cause long-lasting inflammation. Many people carry it without symptoms, while others develop gastritis, ulcers, or related digestive complaints. Laboratory testing helps identify whether the bacterium is present and can support monitoring after treatment.
The test may use a stool sample to detect bacterial antigens, or a blood sample to detect IgG antibodies produced against the organism. Some panels report additional markers such as CagA antibodies or molecular detection of H. pylori DNA. The exact combination depends on the panel ordered and the laboratory's methods.
People commonly order this test when they have persistent indigestion, a known ulcer, a family history of gastric problems, or a need to confirm that an infection has cleared. A qualified healthcare provider uses the result together with symptoms, examination findings, and other tests to decide on next steps.
- H. pylori stool antigen
- H. pylori IgG antibody
- H. pylori IgA antibody
- H. pylori IgM antibody
- CagA antibody (virulence-associated marker)
- VacA antibody when included
- H. pylori DNA by molecular testing
- Urease enzyme activity as a related marker
Why people order this test
- Evaluate persistent indigestion or stomach discomfort
- Investigate a known or suspected peptic ulcer
- Check whether an H. pylori infection has cleared
- Assess risk when there is a family history of gastric disease
- Support a clinician's evaluation of chronic gastritis
How to prepare
No fasting is usually required, though specific panels may ask you to avoid certain products before collection. The laboratory provides sample instructions based on whether a stool or blood sample is used.
Understanding your results
Results are typically reported within one to three business days. A positive finding suggests current or past exposure depending on the marker, and a healthcare provider determines what the result means for your situation.
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Frequently Asked Questions
Can H. pylori be present without symptoms?
Yes. Many people carry the bacterium without noticing any symptoms, which is why testing is interpreted with clinical findings.
Which sample is used for this test?
It depends on the panel. Stool antigen testing uses a stool sample, while antibody testing uses a blood sample.
Does a positive antibody result mean I have an active infection?
Not always. Antibodies can persist after an infection clears, so a healthcare provider may order additional testing.
Is retesting needed after treatment?
Clinicians sometimes confirm clearance with follow-up testing; discuss appropriate timing with your healthcare provider.
How long do results take?
Most results are available within one to three business days after the laboratory receives the sample.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.