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Test Code WBC White Blood Cell (WBC) Count, Blood

Performing Laboratory

Huntsville Hospital Laboratory/Madison Hospital Laborator

Methodology

Laser Technology

Specimen Requirements

Specimen must arrive within 24 hours of draw.

 

Draw blood in a lavender-top (EDTA) tube(s) or a CAPIJECT® (EDTA) tube(s), and send 5 mL of EDTA whole blood. Forward unprocessed whole blood promptly.

Specimen Stability Information

 

Specimen Type

Temperature

Time

Whole blood, EDTA

RT

24 hrs
 

Refrigerated

48 hrs

 

Reject Due To

 

Hemolysis

NA

Lipemia

NA

Icterus

NA

 

Reference Values

 

WBC (103/uL)
Age Male Female
>0d 9.0-18.4 9.0-18.4
>5d 7.3-16.6 7.3-16.6
≥1yr 5.6-17.0 5.6-17.0
≥4yr 4.9-12.9 4.9-12.9
≥6yr 4.4-10.6 4.4-10.6
≥8yr 3.9-9.9 3.9-9.9
≥15yr 4.2-12.2 4.2-10.6
≥18yr 4.1-12.2 4.1-12.2

Critical values: <2.0 x 103/uL or > 30.0 x 103/uL

Day(s) Test Set Up

Monday through Sunday

CPT Coding

85048

Secondary ID

HHA267

LOINC Coding

Test Name LOINC Code

White Blood Cell (WBC) Count, Blood

6690-2