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

Methodology

Automated Analyzer
Useful for WBC enumeration and to evaluate myelopoiesis, bacterial and viral infections, toxic metabolic processes, and leukemic states.

Performing Laboratory

St. Clair Hospital Laboratory

Specimen Requirements

1 lavender-top (EDTA) tube (3 mL of EDTA whole blood).

Reference Values

0 days:  9.4-34.0 K/µL
7 days:  5.0-21.0 K/µL
6 months:  6.0-17.5 K/µL
4 years:  5.5-15.5 K/µL
≥14 years:  4.8-10.8 K/µL
Critical values (automatic call-back):  <2.5 K/µL or >75.0 K/µL

Day(s) Test Set Up

Monday through Sunday