Urea breath test for Helicobacter pylori detection: present status

Area of Science:

• Microbiology
• Gastroenterology
• Diagnostic Medicine

Background:

• Helicobacter pylori (H. pylori) is a prevalent global pathogen, affecting over half the population over 40.
• H. pylori infection is a major cause of chronic gastritis, peptic ulcers, and gastric cancer.
• Non-invasive diagnostic strategies are recommended for H. pylori detection in primary care.

Purpose of the Study:

• To review the current status and applications of the Urea Breath Test (UBT) for H. pylori detection.
• To highlight the advantages of UBT over traditional invasive diagnostic methods.
• To emphasize the need for standardized protocols in UBT procedures.

Main Methods:

• The Urea Breath Test (UBT) principle involves ingesting labeled urea, which H. pylori urease hydrolyzes.
• Released 13/14CO2 is absorbed, excreted in breath, and measured.
• Non-invasive methods like UBT, stool antigen tests, and blood serology are compared to invasive biopsy techniques.

Main Results:

• 13C-UBT is considered the preferred test for confirming H. pylori infection due to its accuracy and non-invasive nature.
• 13C-UBT is safe for pregnant women and children as it is non-radioactive.
• Variations in UBT protocols (tracer dose, test meals, timings, cut-off values) necessitate validation studies.

Conclusions:

• The Urea Breath Test (UBT) is a highly effective non-invasive tool for diagnosing H. pylori infection.
• Standardization of UBT protocols is crucial for reliable and consistent results across different healthcare settings.
• UBT offers a valuable alternative to invasive procedures for H. pylori screening and diagnosis.