Fractional Exhaled Nitric Oxide
FENO
Description
"Fractional Exhaled Nitric Oxide (FeNO)" test measures nitric oxide levels in your breath to assess airway inflammation, often related to asthma. It’s commonly used to confirm asthma diagnoses, evaluate inflammation levels, or fine-tune anti-inflammatory treatments. During the test, you exhale slowly into a device that analyzes nitric oxide concentration. Higher levels usually point to allergic or eosinophilic asthma. Results help doctors tailor medications and monitor control over time, supporting more effective respiratory care.
Test Category
Lung Function
Procedure
Non-Invasive
Sample Type
Breath
Units
Parts Per Billion
Procedure Category
Measure
Test Group
Complete Pulmonary Function Group
Test Group Description
Complete Pulmonary Function Group: Comprehensive evaluations of respiratory function offer detailed insights into lung function, airway inflammation, and structural abnormalities, facilitating the precise diagnosis and management of pulmonary conditions.
Optimal Range
For Adults:
Conventional Unit: Not Available
SI Unit: Not Applicable
For Children:
Conventional Unit: Not Available
SI Unit: Not Applicable
Normal Range
For Adults:
Conventional Unit: <25.00 ppb
SI Unit: Not Applicable
For Children:
Conventional Unit: <20.00 ppb
SI Unit: Not Applicable
Results That Differ From The Norm (Direct and Indirect Causes)
Increased levels may indicate:
Asthma (Airway inflammation leading to increased nitric oxide production)
Chronic obstructive pulmonary disease (Chronic inflammation of the airways)
Psoriasis (Skin inflammation leading to increased systemic inflammation)
Pulmonary arterial hypertension (Increased pressure in the pulmonary arteries)
Respiratory tract inflammation (General inflammation of the respiratory tract)
Key Reasons For Testing
Airway Inflammation Marker: Fractional exhaled nitric oxide (FeNO) measures airway inflammation via exhaled breath.
Assessment of Inflammation: Elevated FeNO levels indicate asthma, allergic rhinitis, or eosinophilic bronchitis.
Asthma Diagnosis & Monitoring: Provides objective data for asthma diagnosis and treatment evaluation.
Eosinophilic Phenotype Identification: Pinpoints eosinophilic airway infla...
Health Status Conditions It May Be Used To Assess
Currently, this test is not directly associated with any conditions listed on the Health Status page. However, it may be included as part of a broader set of tests linked to specific health conditions.
Some Prominent Medical Labs That May Offer This Test
Please note that this particular test has not been associated with any of the listed prominent medical labs. We recommend enquiring with your private physician or nearest hospital to determine where this specific test can be performed.
References
Important Note
Any medical procedure yielding results outside the norm may be directly or indirectly linked to the conditions outlined on this page. Various factors, including genetics, medication and supplement usage, recent illnesses, pregnancy, pre-test eating, smoking, and stress, can impact the test's outcome. Additionally, factors like false positives, false negatives, inaccurate analyses, and others can influence results.
Reference ranges, which help healthcare professionals interpret medical tests, may vary depending on age, gender, and other factors. They may also differ between laboratories due to variations in instruments and methods used. Optimal ranges are designed for preventive purposes, aiming to identify trends and potential risks early, while normal ranges reflect conventional laboratory values indicating no current disease or pathology. Your healthcare practitioner may have specific reasons for testing that deviate from the usual or may interpret results differently based on individual circumstances. Proper interpretation typically involves considering clinical findings and other diagnostic tests. Hence, it is crucial to provide your healthcare professionals with a comprehensive medical history, consult with them for result interpretation, and follow their guidance for potential re-testing or additional diagnostics.
Disclaimer
This content is provided solely for informative and educational purposes. It is not intended as a substitute for medical advice or treatment from a personal physician. Regarding the interpretation of their medical test results and/or specific health questions, it is recommended that all readers and viewers consult their physicians or other qualified health professionals. The publisher is not responsible for any adverse health effects that may result from reading or following the information in this educational content. Before beginning any nutrition, supplement, or lifestyle program, all viewers, especially those taking prescription or over-the-counter medications, should consult their physician or health care practitioner.
Please note that while prominent lab names are included in this content, we cannot guarantee that these labs offer all the tests mentioned. For confirmation, individuals should contact the labs directly or consult their medical practitioners. The information provided reflects general knowledge at the time of publication and may not include recent updates or emerging research. Readers should verify details with qualified professionals to ensure the most up-to-date and accurate guidance.
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