Important Safety Information | NIOX VERO® User Manual (PDF)

For UK Healthcare Professionals Only

AAC Portal Distributors

The gold standard FeNO device from Circassia

Accurately assess airway inflammation at the point-of-care, with NIOX VERO®.

Inhale. Exhale.

With NIOX VERO®, testing FeNO is as simple as inhaling and exhaling. Our unique breathing handle ensures your results are accurate.

Find out how →

Never-ending performance

Our pre-calibrated sensors just work, from the first test to the last test. Whenever you need a new sensor, simply replace in one click and resume testing.

See how →

One test, one result

NIOX® protects your patients from failing a test. Flow Rate Control guides your patients to a successful test, leading to an accurate result each time, every time.

About Flow Rate Control →

FeNO testing made simple

Everything you need

Comprehensive suite of apps

Engaging video and audio animations

Dedicated child mode

Results in about one minute

Exceptionally efficient viral and bacterial filters

Not forgetting:

Nasal Nitric Oxide

Say hello to nNO

NIOX VERO® can also perform Nasal Nitric Oxide measurements for supporting the diagnosis of Primary Ciliary Dyskinesia.

About Nasal →

See NIOX® on your desk

Augmented Reality

Experience NIOX VERO® on your desk with our interactive augmented reality experience. Simply visit: on your mobile phone to see NIOX VERO® on your desk.

Scan QR Code to open on mobile →

Get started with NIOX VERO®

Join the thousands of healthcare professionals who have already performed over 40 million FeNO tests with NIOX®, and improve patient outcomes.


1. Clapp LJ, Jenkin ME. Analysis of the relationship between ambient levels of O3, NO2 and NO as a function of NOx in the UK. Atmos Environ. 2001;35(36):6391-6405 2. Data on file C-NIOX-0009. Circassia Ltd. 3. Data on file C-NIOX-0010. Circassia Ltd. 4. American Thoracic Society; European Respiratory Society. ATS/ERS recommendations for standardized procedures for the online and offline measurement of exhaled lower respiratory nitric oxide and nasal nitric oxide, 2005. Am J Respir Crit Care Med. 2005;171(8):912-30.