Appropriate Antigen Concentrations and Timing of a Nasal Provocation Test

Purpose: We aimed to determine appropriate antigen concentrations and the right time to evaluate intranasal changes when performing a nasal provocation test (NPT). Also, we sought to analyze the diagnostic usefulness of individual nasal symptom and peak nasal inspiratory flow (PNIF). Materials and methods: We divided 46 patients into allergic rhinitis (AR) group (n=19) and a non-allergic …

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