What is the role of blood eosinophil count in the diagnosis of allergic rhinitis (hay fever)?

Updated: Dec 26, 2018
  • Author: Javed Sheikh, MD; Chief Editor: Michael A Kaliner, MD  more...
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As with the total serum IgE, an elevated eosinophil count supports the diagnosis of allergic rhinitis, but it is neither sensitive nor specific for the diagnosis. The results can sometimes be helpful when combined with other factors.

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