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Test Code WBCCNT WBC LAB299

Performing Laboratory

UnityPoint Finley Hospital

Test Method

Sysmex XN

WBC: Impedance counting

Performance

Testing is performed Monday through Sunday.

Routine orders: Typically completed within 2 hours upon receipt in the lab.

STAT orders: Typically completed within 30 minutes upon receipt in the lab.

Specimen Requirement

Whole blood collected in EDTA purple-top tube. The tube must be at least one quarter full to be acceptable for testing.

Capillary specimen collected in EDTA microtube. The tube must contain at least 375 ul (bottom line) to be acceptable for testing.

Useful For

Screening tool to confirm a hematologic disorder.

Monitor effects of radiation or chemotherapy.

These counts are used as clinical guides in the diagnosis and/or monitoring of many diseases.

Reference Values

WBC

 

sex age range expected range critical low critical high
M & F 0-1 yr 6.0-17.5 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F 1-2 yr 6.0-17.0 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F 2-4 yr 5.5-15.5 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F 4-6 yr 5.0-14.5 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F 6-8 yr 4.5-13.5 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F 8-10 yr 4.5-13.5 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F 10-16 yr 4.5-13.0 thou/mcL 1.0 thou/mcL 50.0 thou/mcL
M & F ≥ 16 yr 3.7-11.0 thou/mcL 1.0 thou/mcL 50.0 thou/mcL

CPT Code Information

85048 Blood Counts: leukocyte (WBC), automated