Exhaled nitric oxide in the diagnosis of asthma in adults: a systematic review.
S E HarnanM EssatT GomersallP TappendenI PavordM EverardR LawsonPublished in: Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology (2017)
FE NO50 had variable diagnostic accuracy even within subgroups of studies with similar characteristics. Diagnostic accuracy, optimal cut-off values and best position for FE NO50 within a pathway remain poorly evidenced.