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White Blood Cell (WBC) Count

Test Code
WBC


CPT Codes
85048

Preferred Specimen
EDTA (Lavender) Tube


Minimum Volume
0.5 mL


Transport Temperature
Room Temperature


Specimen Stability
Room Temperature: 24 hours
Refrigerated: 48 hours
Frozen: Unacceptable


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, clotting


Reference Range
Age Range Sex Reference Low [x10(3)/uL] Reference High [x10(3)/uL]
0 Min 1 Week All 8.00 28.00
1 Weeks 1 Months All 5.00 19.50
1 Months 3 Years All 6.00 17.50
3 Years 7 Years All 5.50 15.50
7 Years 16 Years All 4.50 13.50
16 Years 150 Years All 3.10 9.90


Performing Laboratory
This test is performed at the following locations:
  1. MercyOne Siouxland Medical Laboratory
  2. MercyOne Dakota Dunes Medical Laboratory



Last Updated: May 7, 2025


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.