Laboratory: Hematology
Test Name:
DIFFERENTIAL (WBC) - (B)
Test Code: SLR
Clinical Information:
Test performed at:   HSC, St. Boniface, and Westman Hematology Laboratories.
 
Policy:
Requests for manual differentials/ blood film review, should be limited to a specific purpose, and must be accompanied by a clinical reason for the request clearly stated on the requisition.
Exceptions:
  * Only one manual WBC differential will be provided per 24 hour period.
  * Manual WBC differential will not be performed on a WBC ≤0.5 x 109/L.
A (reportable) WBC Differential will be reported with every CBC. The reportable WBC differential may be the automated 5-part-differential (auto diff) or the manual differential. When the auto diff cannot be verified/ confirmed a manual differential is performed and reported as the Reportable WBC Differential.
Collection Devices:
Specimen Required:
Blood: 2.0 mL
Pediatric Blood: 0.5 mL

When venipuncture is unsuitable, collect capillary blood in an EDTA microtainer.
Referral:
Requisition:
Reference Values:
See Report or Individual Components (ie. Neutrophils (Absolute))
Availability:
Daily
See Also:
More Information: