Eosinophil Counts, FeNO May Predict Asthma, COPD Exacerbations

June 15, 2026 |  2 min read

blood eosinphils

Can baseline blood eosinophil counts and fractional exhaled nitric oxide (FeNO) levels predict exacerbations in patients with asthma and COPD? That’s the question researchers from the Netherlands asked in a study that included 4,319 patients who underwent eosinophil assessment and 7,770 who were te…

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Debbie Bunch

Debbie Bunch

Debbie Bunch has a bachelor's degree in journalism from the University of North Texas and lives in Dallas, Texas. She has spent many years writing for the AARC on topics ranging from clinical innovations to management. In her spare time, she enjoys traveling, reading, photography, and spending time with friends, family, and her rescue pup Juju.

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