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Test Code HPAGS - Obsolete Test Helicobacter pylori Antigen, Stool -

Important Note

Falsely negative results may be obtained within 2 weeks of treatment with antimicrobials, bismuth, or proton pump inhibitors. A negative test result in such a situation should be followed up with a repeat test at least 2 weeks after discontinuing therapy.

Additional Codes

Epic Test ID


Performing Laboratory

Bronson Methodist Hospital Laboratory

Reference Values

Normal: negative

Abnormal: positive


Enzyme Immunoassay (EIA)

Note: Stool antigen testing is recommended
over serology for diagnosis of Helicobacter pylori
infection. See Helicobacter pylori Stool Antigen Testing
Algorithm in Special Instructions for additional information.

Specimen Requirements

Specimen Type: Stool

Container/Tube: Clean, dry, plastic

Specimen Volume: 5 g

Specimen Minimum Volume: 1 g

Collection Instructions:

1. Label container with patient’s name, date of birth, and
date and time of collection.

2. Causes for rejection include: stool in transport media, swab,
or preservative.   

Specimen Transport Temperature

Ambient:  Not acceptable

Refrigerated:  72 hours

Frozen:  Up to 7 days

Day(s) Test Set Up

Monday through Saturday

Test Classification and CPT Coding