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Test Code CD19-NorDx Lab CD19+ (B CELLS) COUNT, BLOOD

Important Note

This test is performed at NorDx Laboratory, please order as MISCL test to NorDx.

Days and Times Test Performed: Monday through Thursday

Specimens drawn on Friday MUST ARRIVE in Scarborough lab before midnight Friday to ensure processing within 48 hours of collection.

Specimen Requirements

Specimen Type: Whole Blood

Preferred Container: Lavender Top Tube (EDTA)

Preferred Volume: Whole Blood: 4.0 mL (Lavender Top Tube (EDTA))

Minimum Volume: Collecting minimum volumes can result in a need for sample recollection, and/or a delay in results. Minimum volumes are subjective and cannot account for all aspects of specimen and testing needs. Refer to the Preferred Volume section for optimal volumes for laboratory specimens.

 

Whole Blood:  2.0 mL Lavender Top Tube (EDTA))

Specimen Collection and Handling: Send at ambient temperature. Specimen must be received within 48 hours of draw. Date of collection is required on the request form for processing.

Reference Values

Percent and absolute counts of CD 19+ cells reported with age specific normal ranges.

Methodology

Flow Cytometry

This assay is a lab developed test established by the NorDx Flow Cytometry Laboratory. This laboratory is certified under the Clinical Laboratory Improvement Amendments (CLIA) as qualified to perform high complexity clinical laboratory testing. This test is used for clinical purposes. It should not be regarded as investigational or for research.

CPT Codes

86355