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Helicobacter pylori Antigen, EIA, Stool
Collect 0.5 mL of semisolid stool or 20 mm diameter of solid stool and transfer to a properly labeled, sterile, plastic, leakproof container. Do not place stool in preservative, transport medium, or swab. Watery, diarrheal stool is not acceptable.
Minimum: 0.5 mL semisolid stool or 20 mm diameter of solid stool, submitted in a properly labeled, sterile, plastic, leakproof container, frozen
Patient Preparation: For initial diagnostic purposes no special patient preparation is required. Patients are not required to be off of medications or to fast before this test. While positive test results from patients taking agents such as proton pump inhibitors and antimicrobials should be considered accurate,false negative results may be obtained. For this reason, physicians may suggest the patient go off medications for two weeks and repeat test if negative results are obtained.
To confirm eradication, testing should be done at least 4 weeks following the completion of treatment. However, a positive test result 7 days post therapy is indicative of treatment failure.
This test is cleared for use with specimens from pediatric patients.
Sterile, plastic, leakproof container
Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen: 30 days
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
Mon, Wed, Fri p.m.; Report available: 4 days
There may be possible false-negative results associated with recent PPI use.
This test is intended to aid in the diagnosis of H.pylori infection and to aid in monitoring the efficacy of antimicrobial therapy. A result of "Detected" indicates H. pylori antigen is present. "Not Detected" indicates the absence of H. pylori antigens or the level of antigen is below the sensitivity of the assay.
Antimicrobials, proton pump inhibitors, and bismuth preparations are known to suppress H. pylori, and ingestion of these prior to H. pylori diagnostic testing may give a false negative result. If clinically indicated, the test may be repeated on a new specimen obtained two weeks after discontinuing treatment.
Colonization with H. pylori is associated with increased risk of patients developing gastritis, peptic ulcer disease, and gastric adenocarcinoma. Stool antigen testing provides a sensitive measure of infection including during and after treatment.
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
(The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.)
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.