Nasal Smear for Eosinophils

Eosinophilia may be found in allergic disorders, skin diseases, malignant neoplasm, myeloproliferative disorders, parasitic infestation, and some infections (e.g. scarlet fever, chorea). Reduction of eosinophils occurs as a response to stress and in Cushing’s syndrome. Lowest counts are in the morning, highest at night.

There is no percentage or eosinophil count diagnostic of asthma, but levels >80% (related to proportion of neutrophils) are very suggestive of asthma or of chronic bronchitis with wheezing. Gram-stained smears of microbiology specimens will not stain eosinophils, and this cell type cannot be identified on such preparations.

Nasal Fluid Room Temperature

As per Report