Correlation between serum IgE, absolute eosinophil count and spirometry with FeNO in asthma patients attending a tertiary care centre in South India

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Discussion

Observational study reveals strong links between FeNO, serum IgE, and airflow obstruction in asthma patients, suggesting its use as a biomarker.

Higher FeNO levels correlate with worse asthma control and greater airway obstruction.
Strong positive correlations exist between FeNO and serum IgE, alongside eosinophil count and FEV1 reversibility.
This study analyzed correlations between various biomarkers and spirometry in 62 asthma patients to assess inflammation.
FeNO is identified as a reliable non-invasive biomarker for monitoring asthma control and guiding treatment decisions.

Jacob et al. (2025) studied this question.

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Observational study reveals strong links between FeNO, serum IgE, and airflow obstruction in asthma patients, suggesting its use as a biomarker.