Specimen Requirements

Title

T4/T8 Helper/Suppression Ratio (CD4/CD8)

Specimen Requirement

Draw blood in a lavender EDTA tube.  Send 4.0mL whole blood (1.0mL minimum) room temperature. Ship within 24 hours of collection.

CRITICAL ROOM TEMP

Methodology

Flow Cytometry

Stability

ROOM TEMPERATURE: 72 HOURS; REFRIGERATED: UNACCEPTABLE; FROZEN: UNACCEPTABLE

Reference Range

Turnaround

3 Days; Performed Mon-Friday

Clinical Use

This test includes CD4 and CD8, please do not order CD4 when order CD8.

Test Code

CD8W