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White Blood Cell Count
0040320
Ordering Recommendation
Mnemonic
WBC
Methodology
Automated Cell Count
Performed
Sun-Sat
Reported
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
One 5 mL lavender (EDTA) or pink (K2 EDTA).  
Specimen Preparation
Mix specimens thoroughly to avoid clotting of specimen.  
Storage/Transport Temperature
5 mL whole blood at 2-8°C.  (Min: 0.25 mL of thoroughly mixed whole blood)  
Unacceptable Conditions
Frozen or clotted specimens.  
Remarks
 
Stability
Ambient: 1 day; Refrigerated: 3 days; Frozen: Unacceptable  
Reference Interval
Age
1-3 days
4-7 days
8-14 days
15-30 days
31-60 days
61-180 days
6-23 months
2-5 years
6-11 years
12 years and older
Male (K/µL)6.8-13.38.3-14.18.2-14.47.4-14.66.7-14.26.9-15.76.2-14.55.3-11.54.5-10.53.2-10.6
Female (K/µL)8.0-14.38.8-14.88.4-15.48.3-14.77.0-15.16.8-16.06.4-15.05.3-11.54.7-10.33.2-10.6

Interpretive Data


Note
CPT Code(s)
85048
Components
Component Test Code*Component Chart NameLOINC
0040320White Blood Cell Count6690-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • WBC Count