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Eosinophil Smear, Nasal
Test CodeEOSMR
Alias/See Also
EO Smear, Nasal Smear
CPT Codes
89190
Preferred Specimen
SLIDE (SLD)
Nasal Secretion
Nasal Secretion
Instructions
Deliver to laboratory within 2 hours of collection.
Methodology
Manual slide
Setup Schedule
24x7
Reference Range
None Seen
Result Options: None Seen, Rare, Occasional, Few, Moderate, Many
Result Options: None Seen, Rare, Occasional, Few, Moderate, Many
Clinical Significance
The finding of an increase of eosinophils in nasal secretion is one of the most helpful tools in the diagnosis of an allergy. An eosinophil count in a nasal smear of 20-25% indicates that the patient is allergic. During infectious colds the neutrophils predominate and the eosinophils may disappear completely in the acute stage.
The blood differential count does not show any constant relationship to the nasal differential count.
The blood differential count does not show any constant relationship to the nasal differential count.
Performing Laboratory
CRMC Laboratory
CCMC Laboratory
