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Test Code WBC White Blood Cell Count (WBC)

Performing Laboratory

Memorial Hospital Laboratory- Automated Procedures  304-388-5953       
General Hospital Laboratory 304-388-6244
Women and Children's Hospital Laboratory 304-388-2385
Teays Valley Hospital Laboratory 304-757-1770
Cancer Center Laboratory 304-388-8317
Plateau Medical Center Laboratory 304-469-8621

Specimen Requirements

Whole Blood-Lavender-top (EDTA) tube or microtainer

3 mL of  whole blood (minimum 1 full microtainer)

Specimen Rejection

  • Improperly labeled, collected, stored or tranported
  • Clotted specimen
  • Grossly hemolyzed
  • Contaminated
  • Quantity not sufficient

Storage and Stability

Room Temperature 18-24o C 24 hours
Refrigerate 2-8o C 48 hours
Frozen Unacceptable

Specimens analyzed on back up instruments at Cancer Center, Teays Valley or Women's and Childrens cannot be analzed if refrigerated longer than 8 hours.

Reference Values

    Male Female Male Female M/F M/F M/F
    >18yo >18yo 10-18yo 10-18yo 2-10yo 1mon-2yr 0-1 month
WBC x103/mcL 4.8-10.8 4.8-10.8 3.9- 11.6 3.9-12.7 4.2-13.2

4.3-15.2

6.1-24.5

 

Critical Value: < 1.5 x103/mcL or > 40.0 x103/mcL

Methodology

Coulter principle 

Days Test Set Up and Turnaround

Monday through Sunday, Continuously

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

CPT Coding

85048

85032-Manual Count