fractional exhaled nitric oxide (FeNO)

Fractional exhaled nitric oxide (FeNO) is a simple breath test used to measure the level of nitric oxide gas in your breath. Nitric oxide is a signaling molecule involved in inflammation, particularly in your airways. Elevated FeNO levels can indicate airway inflammation, often associated with asthma or other respiratory conditions. The test is quick, non-invasive, and helps doctors diagnose asthma, assess inflammation severity, and monitor response to treatment. Essentially, FeNO provides insight into underlying airway inflammation, aiding in personalized management of respiratory health.