Tests for Detection of H. Pylori
Test | Sensitivity/Specificity, % | Comments |
---|---|---|
Invasive (endoscopy/biopsy required) | ||
Rapid urease | 80-95/95-100 | Simple, false negative with recent use of PPIs, antibiotics, or bismuth compounds |
Histology | 80-90/>95 | Requires pathology processing and staining; provides histologic information |
Culture | / | Time consuming, expensive, dependent on experience; allows determination of antibiotic susceptibility |
Noninvasive | ||
Serology | >80/>90 | Inexpensive, convenient; not useful for early follow-up |
Urea breath test | >90/>90 | Simple, rapid; useful for early follow-up; false negatives with recent therapy (see rapid urease test); exposure to low-dose radiation with 14C test |
Stool antigen | >90/>90 | Inexpensive, convenient; not established for eradication but promising |
Abbreviation: PPIs, proton pump inhibitors.