Helicobacter pylori Stool Antigen

CPT: 87338
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Test Details

Synonyms

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

Test Includes

Immunoassay for Helicobacter pylori

Use

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.

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 and transported to the laboratory within 24 hours of collection. If a longer period is required, the specimen should be frozen at -70°C on dry ice.

Causes for Rejection

Inappropriate specimen transport conditions (eg, 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)

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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The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf