FeNO

FeNO (Fractional Exhaled Nitric Oxide) is a non-invasive test used to measure the level of nitric oxide in a patient's exhaled breath. This test is particularly valuable in assessing airway inflammation, especially in individuals with asthma. Elevated levels of nitric oxide often indicate inflammation in the airways, helping pulmonologists make informed decisions regarding asthma management and treatment.

The FeNO test is quick and easy, requiring patients to take a deep breath and exhale into a handheld device that analyzes the nitric oxide concentration. The results provide immediate insights into the patient's respiratory health and can guide the clinician in adjusting medications, such as inhaled corticosteroids, to better control asthma symptoms and reduce exacerbations.