The American Thoracic Society (ATS) have released a new clinical practice guideline, which recommends including FeNO* testing in usual care for asthma patients.

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* Fractional exhaled Nitric Oxide

40m Tests completed worldwide - NIOX VERO®

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

For US Healthcare Professionals Only


Thank you, from us all at Circassia

We are immensely proud to announce that on 2nd June 2021, the healthcare community reached 40 million FeNO tests completed with NIOX® technology. This achievement would not have been possible without the faith placed in NIOX® by the thousands of healthcare professionals worldwide who are working with us to combat asthma.

For more than 20 years, NIOX® has led the way in accurate, reliable FeNO testing, helping millions of asthma patients obtain the best care they can. With 340 million people still affected by asthma globally, we must keep testing. Join the thousands of healthcare professionals testing FeNO with NIOX®.

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