Laboratory Medicine
Test catalogue
Helicobacter pylori Antigen (H. pylori), Feces | |
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Test NameHelicobacter pylori Antigen (H. pylori), Feces |
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Specimen Type / RequirementsContainer Type = 1 Sterile Container Minimum Testing Volume = 0.5g Feces Tube must by tightly capped to prevent leakage |
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Specimen HandlingCollection Instructions: 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 with recent PPI use. For this reason, physicians may suggest the patient go off medications for two weeks and repeat test if negative results are obtained. Collection Instructions: Collect specimen in sterile leak-proof container. Do not place stool in preservative, transport media or swab. Refer to Patient Preparation document prior to collection. Patient Preparation Instructions. Write your initials, date and time of collection on the collection label. Laboratory Staff Instructions: Ensure sample if tightly capped. Store and send frozen. Rejection Criteria: Watery or diarrheal stool, sample in ambient temperature, leaking, unlabeled or samples of non sufficient quantity. Stability: Stable for 4 days ambient or refrigerated and 14 days frozen. Transportation: Send sample to core lab as soon as possible. |
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Required Documentation |
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Turnaround Time (TAT)5 days |
Test Utilization |
Reference ValueNot Detected 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. |
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Test CodeHELPA |
MethodologyEnzyme Immunoassay |
Testing LocationReferred Out – ON, Canada (ROICL02) |
Other InformationLast Updated: April 06, 2022 |