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Eosinophil Count, Blood
Test Code425
CPT Codes
85004, 85048
Preferred Specimen
Whole blood from a full EDTA (lavender-top) tube
Minimum Volume
Microtainer 0.5 mL • 1 mL whole blood EDTA tube
Other Acceptable Specimens
Whole blood from a full EDTA (tan-top) tube
Instructions
Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect EDTA (lavender-top) tube last. Traumatic draw can introduce thromboplastin and trap WBC and platelets. Refrigeration can precipitate fibrin and trap WBC and platelets.
Note: If drawn with lead testing, EDTA (tan-top) is required.
Note: If drawn with lead testing, EDTA (tan-top) is required.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 48 hours
Refrigerated: 48 hours
Frozen: Unacceptable
Refrigerated: 48 hours
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Clotted • Specimen quantity not sufficient • Age of specimen
Methodology
Electronic Counting and Sizing/Cytometry/Microscopy
Setup Schedule
Set up: Mon-Sat; Report available: 1-2 days
Reference Range
See Laboratory Report
