Urease-based tests for Helicobacter pylori gastritis. Accurate for diagnosis but poor correlation with disease...

Area of Science:

• Gastroenterology
• Microbiology

Background:

• Helicobacter pylori infection is a common cause of gastritis and peptic ulcers.
• Accurate diagnosis of H. pylori is crucial for effective treatment.
• Urease-based tests, like the CLOtest, and urea breath tests are widely used for H. pylori detection.

Purpose of the Study:

• To evaluate the predictive value of the CLOtest and low-dose 14C urea breath test for gastritis severity and peptic ulcer presence.
• To correlate diagnostic test results with endoscopic and histological findings.

Main Methods:

• Eighty-four patients undergoing upper endoscopy were studied.
• Antral biopsies were collected for histology and CLOtesting.
• Low-dose 14C urea breath testing was performed.

Main Results:

• Positive urea breath test results (24/84) and CLOtests (22/24) indicated H. pylori infection.
• Patients with positive breath tests showed higher likelihood of duodenal ulcers, severe gastritis, and increased bacterial burden (p < 0.01).
• No significant correlation was found between test results and gastritis severity, bacterial burden, or peptic ulcer presence (p > 0.05).

Conclusions:

• Both the CLOtest and low-dose 14C urea breath test are reliable for diagnosing H. pylori infection.
• Neither test can predict the severity of gastritis, bacterial load, or the presence of peptic ulcers.