New FeNO device for asthma diagnosis
Part of Immune system & allergy, Lungs & breathing clinical trials.
This study tests a new device that measures a lung marker called FeNO (fractional exhaled nitric oxide) to help diagnose asthma. It may be an option for adults with asthma who have not changed their medication recently and have no recent infections.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are 18 years or older.
- You have a doctor-confirmed diagnosis of asthma (based on GINA 2023 guidelines).
- You have had asthma symptoms (like wheezing or shortness of breath) for at least 6 weeks.
- You either never smoked or quit smoking more than 5 years ago.
- You have not used other asthma medications (like steroid inhalers) in the past 4 weeks.
- You have not had a respiratory infection (like a cold or flu) in the last month.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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