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Related Experiment Videos

Helicobacter pylori stool antigen test.

E Mahir Gulcan1, Aydin Varol, Tufan Kutlu

  • 1SSK Bakirkoy Maternity and Children's Training Hospital, Department of Pediatric Gastroenterology, Istanbul, Turkey. mahirgulcan@superonline.com

Indian Journal of Pediatrics
|September 1, 2005
PubMed
Summary

A new stool antigen test (HpSA) accurately detects Helicobacter pylori infections in children with recurrent abdominal pain. This noninvasive method is a reliable and cost-effective alternative to traditional diagnostic approaches.

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Area of Science:

  • Pediatric Gastroenterology
  • Infectious Diseases
  • Diagnostic Microbiology

Background:

  • Helicobacter pylori (H. pylori) infection is common in childhood and often diagnosed using invasive endoscopic methods.
  • Endoscopic procedures for H. pylori diagnosis are costly, inconvenient, and carry risks of complications.
  • There is a need for reliable, noninvasive diagnostic tools for H. pylori in pediatric populations.

Purpose of the Study:

  • To evaluate the diagnostic performance of a novel noninvasive stool antigen test for H. pylori.
  • To assess the utility of the H. pylori stool antigen test (HpSA) in children experiencing recurrent abdominal pain.
  • To compare HpSA results against established gold-standard diagnostic methods.

Main Methods:

  • Eighty children with recurrent abdominal pain underwent upper gastrointestinal endoscopy.

Related Experiment Videos

  • The H. pylori stool antigen test (HpSA), utilizing sandwich enzyme immunoassay, was performed.
  • HpSA sensitivity, specificity, and predictive values were calculated against histology and rapid urease test results.

    • Main Results:

    • H. pylori infection was confirmed in 49 out of 80 children (61%) via gold-standard tests.
    • The HpSA correctly identified 48 of the 49 infected children and all 28 non-infected children.
    • HpSA demonstrated high diagnostic accuracy: 98% sensitivity, 100% specificity, 100% positive predictive value, and 96.5% negative predictive value.

    Conclusions:

    • The H. pylori stool antigen test (HpSA) is a highly reliable, noninvasive diagnostic method for H. pylori.
    • HpSA offers a simple, cost-effective, and time-saving alternative for diagnosing H. pylori infections in children.
    • This test is suitable for use in pediatric patients presenting with recurrent abdominal pain.