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Test Code EOSCNT Eosinophil Count (Absolute), Blood, LAB298


Quantitative Analyzer Using Electronic Resistance Detection and Flow Cytometry/Manual Differential

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred:  Lavender-top (EDTA) tube
Specimen Volume: 2 mL (minimum volume: 1 mL) of EDTA whole blood
Stability:  24 hours at room temperature and up to 36 hours refrigerated

Reference Values

1-6 years: 0.05 - 0.45 eosinophils th/mm3

≥7 years: 0.05 - 0.30 eosinophils th/mm3

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding


Useful For

A low eosinophil count (eosinopenia) will be found in hyperadrenalism (Cushing's disease), shock and following administration of ACTH.  Increased numbers of eosinophils (eosinophilia) occur in allergic reactions, parasitic infections, brucellosis and certain leukemias.