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Test Code LAB880 Helicobacter pylori (h. pylori) Antigen, Stool

Test Name Alias

H. pylori

Clinical Information

This test is intended to aid in the diagnosis of H. pylori infection and to demonstrate loss of H.pylori stool antigen following treatment. Testing for loss of antigen is recommended at least four weeks following completion of therapy.


The H. pylori antigen stool test may produce false negative results if a patient has been taking antibiotics, PPIs or bismuth compounds within 14 days of performing the test.

Collection Instructions

Specimen Type: Stool

Container/Tube: Stool Collection Kit, random collection in sterile container

Minimum volume: 5 g

Collection Instructions:

  • Preferred: Stool in sterile collection container.
    • Acceptable: Stool in Cary Blair transport media (Grand Rapids only)
  • See Resources section for patient collection information (Stool Specimen).

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Specimen Transport Temperature: 

Preferred: Refrigerated (2 - 8°C)

Acceptable: Frozen

Ambient (Grand Rapids only)

Rejection Criteria

Big Rapids:

  • Stool specimens received in transport media, on swabs, or in preservatives are inappropriate for testing.
  • Ambient specimens
  • Specimens that have been frozen and thawed more than twice.

Grand Rapids:

  • Stool specimens in preservatives are inappropriate for testing.
  • Specimens that have been frozen and thawed more than twice.

Specimen Stability

Refrigerated: 72 hours

Reference Range


Performing Department


Performing Department Laboratory Location

Spectrum Health Regional Laboratory, Grand Rapids, MI
Spectrum Health Big Rapids Laboratory, Big Rapids, MI


Rapid lateral flow Immunoassay



Epic Test ID


Reviewed Date