Feno Test

Feno Test

The FeNO (Fractional Exhaled Nitric Oxide) test is a non-invasive diagnostic test used to measure the levels of nitric oxide gas in a person's breath. It provides information about airway inflammation and is commonly used as a tool for assessing and monitoring asthma.

Here's an overview of the FeNO test procedure:

Pre-Test Preparation:

• Avoidance of Certain Substances: Before the test, you may be instructed to avoid smoking, eating, drinking, or using certain medications that could affect the test results. Your healthcare provider will provide specific instructions based on your situation.

Procedure Steps:

• Breath Collection: You will be asked to exhale slowly and steadily into a device called a FeNO analyzer. The analyzer measures the level of nitric oxide in your breath. This process is usually repeated multiple times to obtain accurate and consistent results.
• Test Duration: The entire procedure typically takes about 5 to 10 minutes to complete.

Post-Test Care:

• Test Results: The results of the FeNO test will be available immediately or shortly after the test. The level of exhaled nitric oxide is reported in parts per billion (ppb). Your healthcare provider will interpret the results and discuss them with you.
• Follow-up: Depending on the findings, your healthcare provider may recommend further evaluation, adjustment of your asthma treatment plan, or regular monitoring of FeNO levels to assess the effectiveness of treatment.

The FeNO test is useful in evaluating and monitoring airway inflammation in asthma. Nitric oxide is produced by various cells in the airways, and its levels increase when the airways are inflamed, such as in asthma. Measuring FeNO can help assess the level of inflammation and guide treatment decisions, including the need for medication adjustments or the effectiveness of anti-inflammatory treatments.