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Asthma Awareness Month Part 3: How can FeNO help you?


This is part three of our four-part series for Asthma and Allergy Awareness Month in the USA. Last week we looked at “What is FeNO?”, this week we are expanding on that...

Part three: How can FeNO help you?

Getting down to business - FeNO can help you feel better!

- Diagnose

FeNO testing can be used as part of your asthma diagnostics and is actually recommended by many global and national respiratory bodies.1-4 High FeNO indicates that Asthma is 7x more likely.5

- Manage

Your healthcare professional can use your FeNO score to adjust your treatments to make sure that they are best helping you.6 They can also use it to understand if you are taking your medication as prescribed and that you have good inhaler technique, as FeNO levels can be higher if you are not taking your medication properly.6,7

- Monitor

FeNO testing can be used to monitor your asthma over time and make sure that your treatments are still effective and amend them as needed.6 It is good to know what is going on in your lungs as FeNO testing can reduce exacerbations by around 50%.8,9 FeNO tests are quick and simple to do at your asthma check-ups10, and only involve breathing into the device at about the pressure of blowing bubbles through a straw into a drink.

We hope that this helps you to understand what FeNO can do for you and your asthma. Next week we will be looking at how to do a FeNO test! Why don’t you check out some of our handy resources – such as our FeNO printouts and information page for doctors, or ask your doctor about FeNO and managing your asthma.

Ready for FeNO?

Download all the information you need to share the power of FeNO testing with your family, friends and healthcare team.

What is FeNO?

Download this for more information about FeNO testing.

Information for Doctors

Download and take this leaflet to your doctor / healthcare professional.

Taking a test

Download our handy guide on how to perform a FeNO test.

Related Articles

Tell your doctor about FeNO

Simply mention FeNO at your
next appointment

Download PDF to take
to your next appointment

Supporting evidence:

1. Dweik RA et al. An official ATS clinical practice guideline: interpretation of exhaled nitric oxide levels (FeNO) for clinical applications. Am J Respir Crit Care Med. 2011;184(5):602-15. 2. Gaillard EA et al. European Respiratory Society clinical practice guidelines for the diagnosis of asthma in children aged 5-16 years. Eur Respir J. 2021;58(5):2004173. 3. Louis R et al. European Respiratory Society guidelines for the diagnosis of asthma in adults. European Respiratory Journal. 2022;60(3). 4. Global Initiative for Asthma (GINA). Global strategy for asthma management and prevention, 2023. Available at; https://ginasthma.org/2023-gina-main-report/ 5. Wang Z et al. Agency for Healthcare Research and Quality (AHRQ). The clinical utility of fractional exhaled nitric oxide (FeNO) in asthma management. Comparative Effectiveness Reviews, 197. 2017. 6. Asthma and Allergy Foundation of America (AAFA). FeNO tests to monitor FeNO levels. Available at; https://aafa.org/asthma/asthma-diagnosis/lung-function-tests-diagnose-asthma/feno-tests-to-monitor-feno-levels/. Accessed; Apr 2024. 7. Barry LE et al. Cost-Effectiveness of Fractional Exhaled Nitric Oxide Suppression Testing as an Adherence Screening Tool Among Patients With Difficult-to-Control Asthma. The Journal of Allergy and Clinical Immunology: In Practice. 2023. 8. Petsky HL et al. Exhaled nitric oxide levels to guide treatment for adults with asthma. Cochrane Database Syst Rev. 2016;9(9):CD011440. 9. Peirsman EJ et al. Exhaled nitric oxide in childhood allergic asthma management: a randomised controlled trial. Pediatr Pulmonol. 2014 Jul;49(7):624-31. 10. Alving K et al. Validation of a new portable exhaled nitric oxide analyzer, NIOX VERO®: randomized studies in asthma. Pulm Ther. 2017;3:207-218.