White Blood Cell Count (WBC) and Differential
Also known as WBC
What it measures
- White Blood Cell CountLOINC 6690-2
- NeutrophilsLOINC 770-8
- Band NeutrophilsLOINC 764-1
- Absolute Band NeutrophilsLOINC 26507-4
- MetamyelocytesLOINC 740-1
- Absolute MetamyelocytesLOINC 30433-7
- MyelocytesLOINC 749-2
- Absolute MyelocytesLOINC 30446-9
- PromyelocytesLOINC 783-1
- Absolute PromyelocytesLOINC 26523-1
- Absolute NeutrophilsLOINC 751-8
- LymphocytesLOINC 736-9
- Reactive LymphocytesLOINC 13046-8
- Absolute LymphocytesLOINC 731-0
- MonocytesLOINC 5905-5
- Absolute MonocytesLOINC 742-7
- EosinophilsLOINC 713-8
- Absolute EosinophilsLOINC 711-2
- BasophilsLOINC 706-2
- Absolute BasophilsLOINC 704-7
- BlastsLOINC 709-6
- Absolute BlastsLOINC 30376-8
- Nucleated RBCLOINC 19048-8
- Absolute Nucleated RBCLOINC 30392-5
- Comment(S)LOINC 8251-1
Specimen
- Specimen
- Whole blood from a full EDTA (lavender-top) tube
- Minimum volume
- Microtainer 0.5 mL • 1 mL whole blood EDTA tube
- Also accepted
- Whole blood from a full EDTA (tan-top) tube
- Container
- EDTA (lavender-top) tube
- Temperature
- Room temperature
Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect EDTA (lavender-top) tube last. Mix by gently inverting 8 times. 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.
Turnaround
Set up: Daily (Day shift and Night shift); Report available: 2 days
Billing
CPT 85004, 85048