FeNO testing supports decision-making at several points in asthma care, and is relevant across multiple specialties.
For Pulmonologists
Use FeNO alongside spirometry to build a fuller picture of airway inflammation, especially in patients with ambiguous symptoms or inconsistent spirometry results. Track FeNO trends over successive visits to assess whether inhaled steroid therapy is working.
For Allergists / Immunologists
FeNO helps differentiate eosinophilic (allergic) airway inflammation from other symptom drivers, supporting more targeted treatment plans — particularly useful before escalating to biologic therapies.
For ENT Specialists
Chronic cough, throat clearing, or upper-airway symptoms with an unclear cause can sometimes overlap with lower-airway inflammation. A quick FeNO reading can help decide whether a respiratory referral is warranted.
For Pediatricians
Because the test requires only steady, gentle exhalation rather than a forced maneuver, it’s well tolerated by children who may struggle with spirometry — a practical tool for pediatric asthma diagnosis and follow-up.
Typical Clinical Use Cases
- Supporting an asthma diagnosis when symptoms and spirometry are inconclusive
- Assessing likely responsiveness to inhaled corticosteroids before committing to long-term therapy
- Monitoring inflammation trends across follow-up visits
- Informing step-up/step-down decisions on steroid dosing
- Screening patients with chronic cough for an eosinophilic component
See device specifications → The NObreath Monitor | Request a clinical demo → Request a Quote