A
5200 Harry Hines Blvd.
,
Dallas
,
TX
75235
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General Information
Alias: White blood cell count, white blood cell, white cell, white
Performed: 24 hrs.
Turn Around Time: Med Emerg: 60 minutes; Routine: 4 hrs
CPT Codes: 85048
Performed By: Hematology
Notes:
Part of CBC and CBC with diff. May be ordered as an individual test. A Pathologist Referral will be performed if established criteria are present and further evaluation and/or interpretation is needed.
Testing is also performed in the Rapid Response Lab.
Clinical Utility: Characteristics that may affect test results: lipemia, icterus, hemolysis, and cold agglutinins.
Link:
CBC and Differential Reference Ranges with Transgender Ranges
Unacceptable Conditions:
- Those containing clots
- Substandard mixing of collection
- Expired or improperly stored collection tubes
- Improperly filled tubes based on collection tube manufacturer's guidelines
- Specimens contaminated with IV fluid
- Hemolyzed
- Improperly labeled.
Components
| Name |
Method |
Sex |
Age Range |
Ref. Range Low |
Ref. Range High |
Units |
| WBC |
|
|
|
See above link to CBC and Differential Reference Ranges with Transgender Ranges document to view reference range values and units of measure for all components of the WBC. |
|
|
| NRBC Pct |
|
|
|
See above link to CBC and Differential Reference Ranges with Transgender Ranges document to view reference range values and units of measure for all components of the NRBC Pct. |
|
|
Specimen Requirements
| Type |
Container |
Volume |
Units |
Collection / Delivery |
Storage / Transport |
Off Campus |
| Blood |
Lavender EDTA(K2), 4mL |
|
|
Fill tube to mark. Send to lab within 24 hours of collection |
Room Temperature |
Send refrigerated to lab within 48 hours of collection |
| Blood |
Lavender EDTA (K2), 0.5mL |
Must have 0.5 mL volume in lavender 0.5 mL BD Microtainer MAP tube. |
|
Lavender 4 mL tube is the preferred specimen when possible. |
Room Temperature |
Send to lab within 12 hours of collection. |