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Test Code LAB343 T-Helper/T-Suppresor Cells CD4/CD8 %  

Reporting Title

CD4/CD8 Ratio

Methodology

Flow Cytometry

Useful for monitoring CD4 counts.

Performing Laboratory

OhioHealth Laboratory Services-RMH Special Testing

Specimen Requirements

Draw blood in a lavender-top (EDTA) tube(s), and send EDTA whole blood. (Grossly hemolyzed specimen is not acceptable.) Mix by gently inverting 8 times. Forward unprocessed whole blood promptly at ambient temperature only.

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

Specimen Transport Temperature

Ambient OK/Refrigerate NO/Frozen NO

Reference Values

% ABBREVIATED IMMUNODEFICIENCY

% CD4 (helper cells):  32-58%

Absolute CD4:  430-1,580 cells/µL

% CD8 (suppressor cells):  15-41%

Absolute CD8:  232-1,030 cells/µL

CD4/CD8 ratio:  0.97-3.64

Day(s) Test Set Up

Monday through Friday

Saturday; if received before 10 a.m.

Test Classification and CPT Coding

86360