WBC Count
Label Mnemonic: WBC
Epic code: LAB4952
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Hematology
6240 RCP
356-3527
Specimen(s):
Blood
Collection Medium:
Lavender top tube 3 mL (EDTA)
Minimum:
Full draw; 3.0 mL lavender top; (or fingerstick)
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
18 years+                  3.7-10.5 k/mm3
6 years - <18 years        4.5-13.0 k/mm3
4 years - <6 years         5.0-15.5 k/mm3
2 years - <4 years         5.5-15.5 k/mm3
1 year - <2 years          6.0-17.0 k/mm3
3 months - <1 year*        6.0-17.5 k/mm3
31 days - <3 months*       5.0-19.5 k/mm3
0 day - <31 days*          9.0-30.0 k/mm3
*values refer to full term infants.

Critical value: <1.0 k/mm3 and >50.0 k/mm3
Comments:
This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Methodology:
Flow Cytometry
CPT Code:
85048