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WBC Count (Complete View)

Item Value
Test name WBC Count
Test Update Information
Approval req'd? No
Available Stat? Yes
Utilization Guidelines
Test group
Performed by Parnassus, Mission Bay & Mt. Zion Hematology
In House Availability Test available 24 hours per day 7 days per week
Patient Preparation
Collection Instructions
Container type Lavender top
Amount to Collect 3 mL blood
Sample type EDTA whole blood
Preferred volume
Min. Volume 1 mL blood (or 250 µL in a pedi-bullet)
UCSF Rejection Criteria
Processing notes
Ref Lab Rejection Criteria
Units x109/L
Normal range
0-24 hours 9.0-38.0 x109/L
24 hours-1 wk 5.0-34.0 x109/L
1 wk-6 months 5.0-21.0 x109/L
6 months -4 years 5.5-17.5 x109/L
4-14 years 4.5-15.5 x109/L
14-21 years 4.5-13.2 x109/L
> 21 years 3.4-10.0 x109/L
Critical value ≤ 1.5 x109/L or ≥ 100.0 x109/L will be telephoned if a new finding within the past 24 hours.
Synonyms Leukocyte count; white cell count; white blood cell count
Turn around times STAT 1 hour, Routine 4 hours
Additional information
CPT coding 85048
LOINC code
LDT or Mod FDA?
Include for internal use?
Last Updated 5/29/2016 8:10:21 PM
Entry Number 1008
Image caption
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