[Diagnostic methods in Helicobacter pylori infection]

Area of Science:

• Medical Microbiology
• Diagnostic Medicine
• Gastroenterology

Background:

• Helicobacter pylori infection, first described a decade ago, necessitates reliable diagnostic methods.
• A wide array of diagnostic tests have been developed since the initial description of H. pylori.
• Accurate detection of H. pylori is crucial for patient management and epidemiological studies.

Purpose of the Study:

• To analyze and compare various diagnostic tests for Helicobacter pylori infection.
• To evaluate the sensitivity and specificity of both invasive and non-invasive detection methods.
• To provide recommendations for test selection based on clinical or research objectives.

Main Methods:

• Categorization of diagnostic tests into invasive (requiring endoscopy and biopsy) and non-invasive groups.
• Review and analysis of existing literature on the performance characteristics of H. pylori tests.
• Assessment of sensitivity and specificity data for each described diagnostic modality.

Main Results:

• Histology, an invasive method, is identified as a viable option for diagnosing H. pylori infection.
• Serological tests demonstrate utility for conducting epidemiological studies on H. pylori prevalence.
• The 14C or 13C-urea breath tests are recommended for assessing the effectiveness of H. pylori eradication therapies.

Conclusions:

• The choice of diagnostic test for H. pylori should be guided by the intended application.
• Invasive tests like histology offer diagnostic accuracy, while non-invasive tests provide convenience.
• Specific non-invasive tests are suitable for large-scale epidemiological surveys and monitoring treatment outcomes.