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Helicobacter pylori breath tests

BMJ 2002; 324 doi: (Published 25 May 2002) Cite this as: BMJ 2002;324:1263
  1. Abi Berger, science editor
  1. BMJ

    H pylori diagnostic breath tests rely on a simple chemical reaction which is based on the natural behaviour of the bacteria. Naturally occuring gastric urea is made up of 99% carbon isotope 12C and 1% carbon isotope 13C. The breath test uses urea enriched with 13C (that is, 99%).

    1 Virtually all duodenal ulcers and 80% of gastric ulcers are associated with Helicobacter pylori infections1

    Patients first drink a sachet …

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