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Why NIOX®?

Discover the company behind the gold standard FeNO testing technology1

The only company dedicated solely to testing nitric oxide

For nearly three decades, we have been guided by the science of nitric oxide measurements. From creating the very first commercially available FeNO testing device, through to our latest generation the NIOX PRO®, our objective has always been about accuracy and ease of use to improve patient lives, one breath at a time.

We care about the experience for both you and the patient.

Our devices are all designed with care. Tap the arrows to discover some of the defining elements of our devices.

   

   

Precision in every breath.

NIOX® gives healthcare professionals confidence with every test. Fast, accurate FeNO results support objective asthma diagnosis and tailored treatment decisions.2-4

Designed for clinics.

Compact, portable and maintenance-free. NIOX PRO® fits seamlessly into any workflow, whether in a hospital, GP practice, or respiratory clinic.

Get set-up and testing, immediately.

No waiting for the battery to charge for hours, no unexpected re-conditioning. When your device arrives, plug it in and start testing immediately.

Results in minutes.

One patient. One breath. One number.5 NIOX® delivers FeNO results in under two minutes, providing actionable insights during the consultation.

Made for everyone.

From children to older adults, NIOX® is intuitive for patients and clinicians alike. Built-in animations and real-time guidance ensure successful tests, every time.2

   

Proven. Trusted. Global.

Over 60 million tests performed. Used in more than 75 countries. Featured in 6,000+ clinical publications. NIOX® is the global standard in FeNO testing.1,6,7

Science on your side.

FeNO by NIOX® is backed by decades of research and is the technology of choice.1 With NIOX®, that science is at your fingertips.

No calibration. No hassle.

Thanks to smart sensors, the NIOX NeutroNO® scrubber and FeNO Dry™ technology, NIOX® requires no service, no calibration, and no downtime.

Transparent pricing.

With NIOX®, what you see is what you get. No service charges. No surprise bills. Just reliable FeNO testing, backed by science — and by us.8

Support that breathes with you.

From onboarding to ongoing use, our team is here to support your success with training, education and service tailored to your clinic’s needs.

For nearly three decades we've delivered science-backed devices paired with exceptional customer services.

Tap the arrows to navigate through some of the reasons that position NIOX® as the technology of choice.1

   

OUR VALUES

Designed by NIOX®, inspired by healthcare professionals

At NIOX®, our values define us and are the foundation to our innovations. Watch our values video today to understand the mission and vision that we strive to achieve as a business.

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The next generation of NIOX® is here, and it's available now!

Request a quote for a device today with our simple and easy to use quotation tool. Used by thousands of healthcare professionals, NIOX® is the global technology of choice for FeNO testing.1,7

Request a Quote

Discover FeNO Testing

Learn about FeNO with our free app

Download FeNO Learn

Why NIOX®

Explore the Gold Standard device*

Discover NIOX®

Understand FeNO Scores

Use our interpreting FeNO calculator

Interpret FeNO

* NIOX®. Data on File; MKT-DOF-007. 2024.

NIOX® Customer Support and Training

At NIOX® we are passionate about providing excellent support and training.

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NIOX® Support

Dedicated support from our online resources and customer services team.

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Educational Articles

Read the latest information on FeNO testing and international guidelines.
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Masterclasses

Join our Lead Nurse for Education, Karen Frankland, on an interactive series.
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Scientific Webinars

Learn about FeNO from industry leaders from the scientific community.
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Request a Demo

Book a virtual or in-person demonstration of NIOX PRO® with your local experience team.
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Request a Quote

Request a quote to find out how NIOX® Technology can fit into your practice today.
References:

1. NIOX®. Data on file. MKT-DOF-007. 2026.
2. Carroll WD. NIOX VERO: Individualized Asthma Management in Clinical Practice. Pulmonary Therapy. 2016;2:171-88.
3. Alving K et al. Validation of a new portable exhaled nitric oxide analyzer, NIOX VERO®: randomized studies in asthma. Pulm Ther. 2017;3:207-18.
4. Loewenthal L et al. FeNO in asthma. Semin Respir Crit Care Med. 2022;43:635-645.
5. Hanania NA et al. Measurement of fractional exhaled nitric oxide in real-world clinical practice alters asthma treatment decisions. Ann Allergy Asthma Immunol. 2018;120(4):414-418.
6. NIOX®. Data on file. MKT-DOF-014. 2025.
7. NIOX®. Data on file. MKT-DOF-013. 2024.
8. Crater G et al. Successful fractional exhaled nitric oxide measurements with NIOX VERO using 6-and 10-s exhalation modes in children with asthma aged 4–10 years: a randomized study. Pulm Ther. 2017;3:139-48.

© Copyright NIOX Group plc. MKT-PRM-WW-0544. May 2026.
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