Related Experiment Video
Updated: Sep 30, 2026

An Intestinal Gut Organ Culture System for Analyzing Host-Microbiota Interactions
Published on: June 30, 2021
Evaluation of the string test in intestinal bacterial overgrowth
Abstract:
To determine the efficacy in assessing bacterial overgrowth, the string test (EnteroTest-Pediatric) and duodenal aspiration were compared in 18 children with chronic diarrhea. Isolation and significance of organisms in the small intestine were identical with both methods in all patients. These data suggested that the string test is an accurate, simple, and safe method for assessment of small-intestinal microflora.
Insights
The pediatric string test accurately assesses small intestinal bacterial overgrowth in children with chronic diarrhea. This simple and safe method matches the diagnostic efficacy of duodenal aspiration for evaluating microflora.
Area of Science:
- Pediatric Gastroenterology
- Microbiology
- Diagnostic Efficacy
Background:
- Chronic diarrhea in children can be caused by bacterial overgrowth in the small intestine.
- Accurate diagnosis of small intestinal microflora is crucial for effective treatment.
Purpose of the Study:
- To compare the diagnostic accuracy of the string test (EnteroTest-Pediatric) with duodenal aspiration for assessing bacterial overgrowth in children.
- To evaluate the string test as a reliable diagnostic tool for small-intestinal microflora.
Main Methods:
- A comparative study involving 18 children diagnosed with chronic diarrhea.
- Both the string test (EnteroTest-Pediatric) and duodenal aspiration were performed on all participants.
- Isolation and significance of microorganisms in the small intestine were analyzed for both methods.
Main Results:
- The isolation and significance of organisms identified in the small intestine were identical between the string test and duodenal aspiration in all 18 children.
- Both diagnostic methods demonstrated comparable efficacy in assessing small-intestinal microflora.
Conclusions:
- The string test (EnteroTest-Pediatric) is a highly accurate method for assessing bacterial overgrowth and microflora in the small intestine of children.
- The string test offers a simple, safe, and effective alternative to duodenal aspiration for diagnosing small-intestinal bacterial overgrowth in pediatric patients.
Related Concept Videos
Assessment of the Gastrointestinal System I: Subjective Data
Health History
The initial step in assessing the GI system is obtaining a comprehensive health history. This includes inquiring about the patient's history or presence of problems related to...
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the colonic...
Serum Laboratory Studies, Stool Test, Breath Test
Stringent Response in E. coli

