Easy way not always the best way

Measuring sputum eosinophils is still the best method of identifying eosinophilic airway inflammation, authors of a review conclude. In a systematic review and meta-analysis of 24 adult studies and eight studies involving children Daniel Korevaar from the University of Amsterdam and colleagues assessed the sensitivity, specificity, and predictive value of FeNO, blood eosinophils and serum ...