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BCH Order Code WBC White Blood Cell (WBC) Count, Blood

Performing Laboratory

Boulder Community Health

Specimen Requirements

Container/Tube: 4 mL Lavender-top (EDTA) tube(s) or 2 mL Lavender-top (EDTA) tube(s)

Specimen Volume: 2 mL (minimum) of EDTA whole blood or 1 mL (minimum) of EDTA whole blood
Collection Instructions: Immediately invert 5 times to mix blood

Specimen Transport Temperature

Ambient

Reference Values

0 days: 9.4-34.0 × 103/mm3

1 day: 5.0-19.5 × 103/mm3

1 month: 6.0-17.5 × 103/mm3

3 years: 4.5-13.5 × 103/mm3

≥13 years: 3.83-9.22x 103/mm3

Critical values (automatic call-back): <1.0 × 103/mm3 or >50.0 × 103/mm3

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

85048