Where Fractional Exhaled Nitric Oxide (FeNO) is reported
| Condition | Direction | Compared against | Associated symptoms | Source |
|---|---|---|---|---|
| Asthma | ↑ elevated | type 2 asthma vs healthy/non-asthmatic individuals | — | Loewenthal et al. 2022 |
Frequently asked questions
In which conditions is Fractional Exhaled Nitric Oxide (FeNO) altered?
In the OSMF atlas Fractional Exhaled Nitric Oxide (FeNO) is reported in Asthma. It is elevated in 1 across 1 entries.
Is there a standard clinical test for Fractional Exhaled Nitric Oxide (FeNO)?
The atlas entries for Fractional Exhaled Nitric Oxide (FeNO) do not carry a LOINC code, which usually means the marker was measured with research assays or study-specific methods rather than a routine clinical panel.
Is one abnormal Fractional Exhaled Nitric Oxide (FeNO) result diagnostic?
No single biomarker result is diagnostic of any of these conditions. Findings reflect group averages from published cohorts with substantial overlap between patients and controls.
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Last reviewed: 2026-07-02 · Browse: Biomarker Index · All marker pages · Biomarker Atlas
Disclaimer: Educational synthesis of peer-reviewed research; not medical advice. Findings are group-level and vary with study design. Discuss any result with a qualified clinician.