| Test Name: |
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White Cell Count and Differential
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| Test Code(s): |
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WBCD
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| CPT Code(s): |
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85027, 85004
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| Test Description: |
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Test Components: White blood cell count and WBC Differential.
Use of manual microscopy for WBC differential is determined by laboratory personnel during testing.
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour.
Routine: 4 hours.
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Specimen Requirements
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| Specimen: |
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Blood
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| Collection Container: |
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Preferred: K3EDTA-Lavender top
Also Acceptable:
K2EDTA-Lavender top
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| Collection Volume: |
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Preferred: 4 mL
Pediatrics: 1 mL
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| Sample Analyzed: |
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Whole Blood
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| Volume Required: |
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Preferred: 1 mL
Pediatrics: 0.25 mL in microtainer
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| Specimen Transport: |
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Transport specimen to the laboratory at ambient temperature.
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| Unacceptable Criteria: |
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Clotted specimens are not acceptable. Tubes with <25% of fill volume.
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| Stability: |
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Ambient: Differential - 8 hours. WBC - 24 hr
Refrigerated: Not acceptable
Frozen: Not acceptable
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Interpretation
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Reference Interval:
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For reference interval information, see individual tests.
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