Which test is not listed among the diagnostic tests for H. pylori in the material?

Which test is not listed among the diagnostic tests for H. pylori in the material?

• A. Blood test
• B. Stool test
• C. Endoscopy without biopsy
• D. Breath test

Answer: (C)

Diagnosing H. pylori relies on tests that detect the bacteria or its activity, not just a visual exam of the stomach lining. Endoscopy by itself doesn’t confirm infection because you haven’t tested tissue for the organism. To diagnose, you’d need tissue samples taken during endoscopy for tests like rapid urease, histology, or culture, or you’d use noninvasive methods such as a urea breath test, stool antigen test, or antibody blood test. Since endoscopy performed without biopsy does not provide direct evidence of H. pylori, it is not listed as a diagnostic test in the material.

Diagnosing H. pylori relies on tests that detect the bacteria or its activity, not just a visual exam of the stomach lining. Endoscopy by itself doesn’t confirm infection because you haven’t tested tissue for the organism. To diagnose, you’d need tissue samples taken during endoscopy for tests like rapid urease, histology, or culture, or you’d use noninvasive methods such as a urea breath test, stool antigen test, or antibody blood test. Since endoscopy performed without biopsy does not provide direct evidence of H. pylori, it is not listed as a diagnostic test in the material.