Helicobacter pylori antigen, stool

Alphabetical Test listing

Helicobacter pylori antigen, stool-4767

Helicobacter pylori antigen, stool
H pylori Ag

An aid in the diagnosis of patients suspected of H pylori infection and to measure post therapy response from patients who have discontinued therapy for at least 4 weeks.

Assay results should be used in conjunction with other clinical and laboratory data to assist the clinician in making individual patient management decisions



For best results, patient should cease use of antimicrobials, proton pump inhibitors, and bismuth preparations for 2 weeks prior to testing as these agents are known to suppress H. pylori and may cause false negative results.

Stool, random
5 g

Collection container should be screw cap, clean, dry and free of detergent residue.


Screw cap plastic container (non sterile)



Refrigerated (preferred) - 72 hours

Ambient - 8 hours

Frozen - 12 weeks

Freeze/thaw cycles - stable x3

  • Stool in transport media or preservatives
  • Stool on swabs
  • Watery stool with little or no solid matter
  • Dried out stool
  • Improper labels (unlabeled or mislabeled)
  • Delay in transport
  • Improper storage temperature affecting results
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
AHL - Immunology: J
1 - 2 days

Chemiluminescent immunoassay (CLIA)