Exhaled Nitric Oxide Test (FeNO)

The Exhaled Nitric Oxide Test (FeNO) measures the amount of nitric oxide gas in your breath, which can indicate inflammation in your airways, especially related to asthma. During the test, you breathe into a device that detects nitric oxide levels, helping doctors assess airway inflammation without invasive procedures. Elevated FeNO levels can suggest active asthma or airway inflammation, guiding appropriate treatment. It’s a quick, non-invasive, and painless way to help diagnose and manage respiratory conditions.