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Updated: Aug 26, 2026

Breath Collection from Children for Disease Biomarker Discovery
Published on: February 14, 2019
Exhaled breath condensate in children: pearls and pitfalls
Philippe P R Rosias1, Edward Dompeling, Han J E Hendriks
1Division of Paediatric Respiratory Medicine, Department of Paediatrics, University Hospital Maastricht, Maastricht, The Netherlands. p.rosias@orbisconcern.nl
Insights
Exhaled breath condensate (EBC) offers a non-invasive method to assess airway inflammation in respiratory diseases, especially in pediatrics. Standardization and assay development are crucial for reliable EBC research and clinical application.
Area of Science:
- Respiratory Medicine
- Clinical Diagnostics
Background:
- Airway inflammation is key in chronic lung diseases like asthma and cystic fibrosis.
- Exhaled breath condensate (EBC) presents a non-invasive approach for assessing airway inflammation.
- Its non-invasive nature makes EBC particularly valuable for pediatric respiratory research.
Purpose of the Study:
- To provide an updated review of EBC collection and mediator measurement methods.
- To highlight the specific challenges and considerations for pediatric EBC research.
- To discuss the current limitations and future directions in EBC standardization.
Main Methods:
- Review of current methodologies for EBC collection.
- Analysis of techniques for measuring inflammatory mediators in EBC.
- Emphasis on studies and data relevant to pediatric populations.
Main Results:
- EBC is a promising tool for non-invasive airway inflammation assessment, particularly in children.
- Significant methodological challenges and lack of standardization hinder data comparison and interpretation.
- The European Respiratory Society is forming a task force to address standardization.
Conclusions:
- While EBC offers a valuable non-invasive technique, its clinical utility is currently limited by methodological pitfalls.
- Standardization of EBC collection and analysis is essential for reliable research and clinical application.
- Awareness of potential methodological issues is critical when utilizing EBC data.
Abstract:
Exhaled breath condensate (EBC) is a rapidly growing field of research in respiratory medicine. Airway inflammation is a central feature of chronic lung diseases, like asthma, cystic fibrosis, bronchopulmonary dysplasia and primary ciliary dyskinesia. EBC may be a useful technique for non-invasive assessment of markers of airway inflammation. The non-invasive character of EBC "inflammometry" and the general lack of appropriate techniques makes it particularly interesting for paediatrics. We provide a detailed update on the methods currently used for EBC collection and measurement of mediators. We emphasize on paediatric data. The apparent simplicity of the EBC method must not be overstated, as numerous methodological pitfalls have yet to overcome. Comparison and interpretation of data on this rapidly growing field of research is mainly hampered by the lack of standardization and the lack of specific high-sensitivity immunochemical or colorimetric assays. The initiative of the European Respiratory Society to institute a task force on this topic is a first step towards a uniform technique of EBC. Meanwhile, when using this technique or when interpreting research data, one should be fully aware of the possible methodological pitfalls.
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