White Blood Cell (WBC) Count

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Turnaround Time: Within 1 day
CPT Code:

85048

Test Type: Whole blood, Tube fill capacity
Stability Time:

Temperature

Period

Room temperature

1 day

Refrigerated

3 days

Frozen

Unstable

Freeze/thaw cycles

Unstable

Reference Range:

WBC x10E3/uL 3.4 − 10.8

Overview:

White cell enumeration; identify leukopenia and leukocytosis.

Collection Details:

Collection Instructions:

Lavender-top (EDTA) tube.

Invert tube immediately 8 to 10 times once tube is filled at time of collection.

Maintain specimen at room temperature.