Evaluation of the diagnostic capacities of saliva sampling from pediatric patients: Protocol for a randomized

Laure Devienne1, Laura Goram1, Claire Morton-Fauche1

  • 1Paediatric medicine department, Centre Hospitalier Universitaire de Poitiers, Poitiers, France.

Methodsx
|July 26, 2026
PubMed

Insights

Saliva sampling offers a less invasive alternative to nasopharyngeal aspiration for diagnosing acute bronchiolitis in infants. This study compares the diagnostic accuracy, tolerance, and acceptability of saliva versus NPA in young children.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Respiratory Medicine

Background:

  • Acute bronchiolosis is a frequent pediatric respiratory infection, particularly in children under two, leading to significant hospitalizations.
  • Current diagnosis relies on nasopharyngeal aspiration (NPA), an invasive method causing distress to children and families.
  • Saliva sampling has shown promise as a well-tolerated diagnostic method for respiratory infections in older children.

Purpose of the Study:

  • To compare the diagnostic performance of saliva sampling against nasopharyngeal aspiration (NPA) for acute bronchiolitis in infants.
  • To evaluate the concordance of diagnostic results between saliva and NPA methods.
  • To assess and compare the tolerance and acceptability of saliva sampling versus NPA in children aged 28 days to 2 years.

Main Methods:

  • A clinical trial (NCT07350291) comparing nasopharyngeal aspiration (NPA) and saliva sampling in children aged 28 days to 2 years.
  • Evaluation of diagnostic concordance between the two sampling methods.
  • Assessment of patient tolerance and family acceptability for each method.

Main Results:

  • Data on diagnostic concordance between saliva and NPA are presented.
  • Findings on the comparative tolerance and acceptability of both methods are detailed.
  • The study provides evidence on the efficacy of saliva sampling as a diagnostic tool for acute bronchiolitis.

Conclusions:

  • Saliva sampling presents a viable, less invasive alternative to NPA for diagnosing acute bronchiolitis in young children.
  • The study supports the potential of saliva testing to improve patient comfort and family experience during respiratory illness diagnosis.
  • Further research may confirm saliva sampling as a preferred diagnostic method in pediatric respiratory infections.

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