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 Field Name  Data Description
Test Name  White Blood Cell Count (WBC)
Code  WBC
CPT Code  85048
Last Modified  4/22/2014
Patient Preparation  
Spec. Requirements  Blood
Tube  Lavender (EDTA)
Collection Volume  3.0 mL
Storage  AMBIENT
Routine TAT  2 hours
STAT TAT  0.5 hour
Days Test Performed  Daily
Performed by BHS  All Hospitals
See Availability  All shifts
Reference Lab  N/A
Reference Lab Code  
Clinical Use  Evaluate the white cell count, bacterial and viral infections, diagnose and or evaluate leukemic states.
Reference Range  Adult: 4.8 - 10.8 k/cmm
Critical Value  <= 1.5 k/cmm or >=50.0 k/cmm (inpatients)<= 1.5 k/cmm or >=15.0 k/cmm (outpatients)
Component  WBC
Reference Range  Adult: 4.8-10.8 k/ cmm
Critical Value  <= 1.5 k/cmm; >=50.0 k/cmm
Testing Sample Type  Whole Blood
Min Lab Testing Volume  ADULT: 1 mL (0.5); Neonate: 0.5 (0.25) mL
Special Handling  Room temperature. If testing is delayed more than 6 hours, store at 2-4 degrees Celsius.
Lab Notes  Blood should be tested within 6 hours of venipuncture. If testing will be delayed more than 4 hours, 2 peripheral smears should be made ASAP after venipuncture.
Methodology  Electronic Impedance

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