Name: White Cell Count and Differential
Test Name: White Cell Count and Differential
Health Link Test Code: WBCD
LIS Test Code: WBCD
CPT Code(s): 85048, 85004
White blood cell count and WBC Differential. Use of manual microscopy for WBC differential is determined by laboratory personnel during testing.
Days Performed: Daily, 24 hours.
In-Lab Turnaround Time: 4 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: K3EDTA-Lavender top
Also Acceptable: K2EDTA-Lavender top, Pink top tube
Collection Volume: 4 mL
Pediatric Collection Volume: 1 mL
Differential - 8 hours. WBC - 24 hr
Sample Analyzed: Whole Blood
Testing Volume: 1 mL
Pediatric Testing Volume: 0.25 mL in microtainer
Transport specimen to laboratory at ambient temperature.
Clotted specimens are not acceptable. Tubes with <25% of fill volume.
For reference interval information, see individual tests.
Interpretation Type: Reference Interval
Differential results may be delayed if a hematopathology review is warranted. A professional fee may be associated with this test.