What is the role of lab studies in the workup of Helicobacter pylori (H pylori) infection?

Updated: Jul 21, 2021
  • Author: Luigi Santacroce, MD; Chief Editor: BS Anand, MD  more...
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Noninvasive diagnostic studies include the carbon 13 urea breath test (UBT), fecal antigen test, and serologic parameters (pepsinogen I and II, H pylori antibody) as surrogate markers of H pylori gastritis and as indicators of gastritis severity. [1, 9]

Patients with new peptic ulcer disease should have a carbon 13 UBT, they should be tested for antibody titers, or they may require an investigation for stool antigens.

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