Experimental Factor Ontology (EFO)
OWL
Last submission date November 17, 2025
ID http://www.ebi.ac.uk/efo/EFO_0005536
http://www.ebi.ac.uk/efo/EFO_0005536
https://agroportal.lirmm.fr/ontologies/EFO/EFO_0005536
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Preferred name

nitric oxide exhalation measurement

Synonyms
FENO fraction of exhaled nitric oxide
Definitions
Quantification of the fraction of nitric oxide in the total exhalation volume, used as a non-invasive biomarker of eosinophilic airway inflammation. Higher Feno values are associated with childhood asthma symptoms, exacerbations, physician-diagnosed asthma and atopy.
Subject Author Type Created
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