Infection with Helicobacter pylori is the cause of most stomach and duodenal ulcers but can be cured by a course of antibiotics. Easy detection is therefore clinically important. Traditional non-invasive tests for diagnosis of H. pylori infection have limitations. Detection of blood antibodies cannot differentiate between active and past exposure. The urea breath test (UBT), while able to identify current infection, is costly and requires specialist equipment since it involves the ingestion of radioactive carbon.
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