Reliability of Diagnostic Tests for Helicobacter pylori Infection

Area of Science:

• Gastroenterology
• Microbiology
• Diagnostic Medicine

Background:

• Helicobacter pylori infection is globally prevalent.
• Accurate diagnosis is essential for managing H. pylori-related conditions and confirming treatment success.
• No definitive gold standard currently exists for H. pylori diagnosis.

Purpose of the Study:

• To evaluate and compare the diagnostic accuracy of various H. pylori detection methods.
• To identify the most reliable and practical diagnostic approach for H. pylori infection.

Main Methods:

• A study involving 304 volunteers screened using serology, 13C-urea breath test (UBT), rapid urease test (RUT), biopsy culture, and histology.
• Culture was utilized as the gold standard for comparison.

Main Results:

• Serology demonstrated 99% sensitivity and 82% specificity (0.86 accuracy).
• UBT (90% sensitivity, 99% specificity, 0.96 accuracy), RUT (90% sensitivity, 98% specificity, 0.95 accuracy), and histology (90% sensitivity, 97% specificity, 0.95 accuracy) showed high diagnostic performance.
• Strong correlations were observed between UBT results and histological/RUT scores.

Conclusions:

• Invasive tests (RUT, histology) exhibited minor accuracy differences.
• RUT is recommended as a first-line test due to rapid results.
• UBT offers comparable accuracy to invasive methods and is suitable when endoscopy is not required.