Helicobacter pylori Antigen by EIA, Stool

Test Mnemonic


CPT Codes

  • 87338 - QTY (1)




  • Campylobacter pylori
  • H pylori Antigen, fecal
  • H. pylori
  • Stool kit
  • Stool test
  • STUL kit

Performing Laboratory

Cleveland Clinic Laboratories

Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.1 mLStoolSterile containerRefrigeratedRefrigeratedNon-preserved stool is the only acceptable specimen. Both solid and liquid stools can be tested. Transport promptly to Microbiology. Refrigerated transport is preferred. Alternatively stool can be frozen if delays in transport >72hrs are anticipated.


Environmental Condition Description
Refrigerated72 hours
FrozenUntil tested

Days Performed

Mon - Fri

Turnaround Time

1 - 4 days


Name Description
Enzyme Immunoassay (EIA) 

Reference Range

Hpylori Ag EIA Stool
Sex Age From Age To Type Range Range Unit
       Negative for Helicobacter pylori 

Special Info

Avoid ingestion of antimicrobials, proton pump inhibitors and bismuth within 14 days of specimen collection. They may cause false negative results.

Clinical Info

H. pylori is a recognized cause of duodenal ulcer, dyspepsia and chronic active gastritis. This test is used as an aid in the diagnosis of H. pylori infection. For adults <55 yrs of age, the H pylori antigen assay should be used in conjunction with other noninvasive tests such as the H pylori Breath test for diagnosis of infection. In older adults (>55 yrs) or those with alarm symptoms, invasive tests such as endoscopy with biopsy may prove helpful for diagnosis. Culture and histology are orderable options. Serological testing is not recommended. The antigen test can also be used to monitor treatment following antibiotics.