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A 32-year-old male asked about a 70-year-old male:

Does taking only( one )pill of rapeprazole 20 mg 4 days before ubt and stool antigen for h pylori cause false negative, i tested both and it was negative but i'm afraid that this one pill might affect the result, should i repeat them ? thanks?

1 doctor answer1 doctor weighed in
Dr. Donald Colantino
Internal Medicine 63 years experience
Ppi's like raperazole can cause false negative results on both UBT and stool antigen test for h pylori but I doubt that one dose 4 days before the tests would suppress h pylori existence significantly. I'm not sure that it's worth repeating them but I would check with your physician and/or the laboratory director.
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Last updated Jul 24, 2021


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