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Test Code LAB93760 CD 19 Count

Important Note

CD 19 positive B-Cell Quantitation by Flow Cytometry, Blood

Reporting Title

CD 19 Count

Performing Laboratory

OhioHealth Laboratory Services-RMH Special Testing

Specimen Collection

Draw blood in a lavender-top (EDTA) tube(s). (Grossly hemolyzed specimen is not acceptable.) 

Mix gently by inverting 8 times. 

Do not centrifuge. 

Forward unprocessed whole blood promptly at ambient temperature only. 

Reference Values

% CD19 (B-cells):  6-22%

Absolute CD19:  89-541 cells/µL

Day(s) Performed

Monday through Friday

Saturday; if received before 10 a.m.

Specimen Transport and Storage

Sample is stable at room temperature for 48 hours. Do not refrigerate or freeze.

Specimen Transport Temperature

Ambient OK/Refrigerate NO/Frozen NO

Methodology

Flow Cytometry

Note:  This assay is not for diagnosing lymphocytic malignancies. Useful for monitoring CD19 counts.

CPT Coding

86355 - B cells; total count