FeNO (Exhaled Nitric Oxide)
Measures airway inflammation, to guide asthma treatment.
Also known as: FeNO, exhaled nitric oxide, airway inflammation test
Price on request
This one is done at the centre — it cannot be collected at home. Find your nearest branch.
- Turnaround
- Same day
- Preparation
- No fasting needed. Eat and drink normally.
- Sample
- In-clinic study
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About this test
Nitric oxide in the breath rises with the specific type of airway inflammation that responds to inhaled steroids. A high FeNO supports the asthma diagnosis and predicts benefit from treatment; a falling level is a practical way to confirm both response and that inhalers are being taken.
What it measures
- Fractional exhaled nitric oxide, in parts per billion
A note on results. A single test is one part of a clinical picture, not a diagnosis. Discuss your report with a qualified doctor, who will read it alongside your history and examination.
Related to
- Lungs & breathing
- Allergy
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