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HelpTest Code LAB299 WBC
Clinical System Name
White Blood Cell Count
Synonyms
WBC
LAB299
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)
CPT Codes
85004
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 |
Description
This test measures the total number of white blood cells per CMM of blood.