The duodenal string test capsule is a cheap and simple device used for sampling the contents of the upper gastrointestinal tract. Its major applications in pediatrics are in diagnosis of enteric parasitic infestations, confirmation of contaminated small-bowel syndrome, diagnosis of Salmonella infection, and assessment of neonatal cholestasis. Pediatricians should be aware of this invaluable diagnostic aid.
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Stanley H. Korman (1990) studied this question.
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