Helicobacter pylori Stool Antigen

TEST: 180764
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CPT: 87338
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Synonyms

  • Campylobacter pylori
  • Campylobacter From Stomach
  • H pylori Stool Antigen
  • Culture, Helicobacter pylori

Test Includes

Immunoassay for Helicobacter pylori

Expected Turnaround Time

2 - 4 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Information

Related Documents

For more information, please view the literature below.

Microbiology Specimen Collection and Transport Guide

Specimen Requirements

Specimen

Stool

Volume

2 g (thumbnail size portion of stool), 2 mL liquid stool

Minimum Volume

1 g stool, 1 mL liquid stool

Container

Sterile screw-cap vial (Para-Pak® white clean vial)

Storage Instructions

Specimen should be kept refrigerated after collection and transported refrigerated to the laboratory within 72 hours. If a longer period is required, or if the specimen is being sent to another lab for testing, the specimen should be frozen at -70°C.

Causes for Rejection

Inappropriate specimen transport conditions (e.g., room temperature) or device; unlabeled specimen or name discrepancy between specimen and request label; specimen received after prolonged delay (usually more than 72 hours); leaking specimen; specimen received in inappropriate container (denture cup, “Cool Whip” container, margarine container, or similar container)

Test Details

Use

This test is used to establish the presence and possible etiologic role of Helicobacter pylori in cases of chronic gastric ulcer, gastritis, duodenal ulcer, dyspepsia, etc.

Methodology

Immunoassay

Contraindications

Antimicrobials, proton pump inhibitors, and bismuth preparations are known to suppress H. pylori, and ingestion of these prior to H. pylori testing may give a false-negative result. If a negative result is obtained for a patient ingesting these compounds within two weeks prior to performing the stool antigen test, it may be a false-negative result and the test should be repeated on a new specimen obtained two weeks after discontinuing treatment. A positive result for a patient ingesting these compounds within two weeks prior to performing the stool antigen test should be considered accurate.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
180764 H. pylori Stool Ag, EIA 17780-8 180764 H. pylori Stool Ag, EIA 17780-8

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