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HelpTest Code LAB299 WBC
Clinical System Name
White Blood Cell Count
Synonyms
WBC
LAB299
Description
This test measures the total number of white blood cells per CMM of blood.
Sample Requirements
Specimen: Whole Blood
Container(s): Lavender/EDTA
Preferred Vol: 1.0-3.0 mL
Minimum Vol: 0.5 mL Microtainer; 1.0 mL Macrotainer
Notes: A Lavender top/EDTA Macrotainer must contain at least 1.0 mL.
Processing Instructions
Reject due to: Insufficient Quantity, Wrong Sample Collection, Clotted Sample, Age of specimen
Spin: N
Aliquot: N
Temp: RT
Storage location: Core 5 Fridge
Off-site collection: Store whole blood at room temperature and transport to Children's Lab immediately. Samples > 24 hours old may be rejected.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood | RT |
≤ 24 h |
| Whole Blood | 2-8 C |
≤ 48 h |
| -20 C or -70 C |
N |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 1 H |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Hematology
Phone Number: 206-987-2617 (Client Services)
Methodology
Method: Sysmex XN 3000: flow cytometry with semiconductive laser
Analytical Volume: 0.25mL whole blood
Reference Range
|
Test |
Sex |
Age Range |
Normal Range |
Unit |
|
WBC |
Both |
0 - 1 Day |
9.0 - 30.0 |
K/CMM |
|
WBC |
Both |
1 Day - 1 Week |
5.0 - 21.0 |
K/CMM |
|
WBC |
Both |
1 Week - 1 Month |
5.0 - 19.5 |
K/CMM |
|
WBC |
Both |
1 Month - 1 Year |
6.0 - 17.5 |
K/CMM |
|
WBC |
Both |
1 - 2 Years |
5.0 - 15.5 |
K/CMM |
|
WBC |
Both |
2 - 4 Years |
6.0 - 15.5 |
K/CMM |
|
WBC |
Both |
4 - 6 Years |
5.0 - 13.5 |
K/CMM |
|
WBC |
Both |
6 - 10 Years |
4.5 - 13.5 |
K/CMM |
|
WBC |
Both |
10 - 14 Years |
5.0 - 11.0 |
K/CMM |
|
WBC |
Both |
14 Years - Adult |
4.5 - 11.0 |
K/CMM |
CPT Codes
85004