What is the role of histopathology in the diagnosis of H pylori infection (HPI)?

Updated: Apr 26, 2021
  • Author: BS Anand, MD; Chief Editor: Philip O Katz, MD, FACP, FACG  more...
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Obtain histopathology, often considered the criterion standard to establish a diagnosis of H pylori infection, if the rapid urease test result is negative and a high suspicion for H pylori persists (presence of a duodenal ulcer).

Antibodies (immunoglobulin G [IgG]) to H pylori can be measured in serum, plasma, or whole blood. Results with whole blood tests obtained from finger sticks are less reliable.

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