Lymphocyte Subsets

WBC % Lymphocytes Absolute Lymphocyte Count Lymphocyte Subsets (% Positive and Absolute)
CD3	Pan T Lymphocyte
CD19	Pan B Lymphocyte
CD3/CD4	Helper-inducer T Lymphocyte
CD3/CD8	Suppressor/Cytotoxic thymocyte
CD56	Natural killer cell
CD4:CD8	Helper/Suppressor ratio
Specimen required: Back to Flow cytometry	Blood: Collect one 5 mL lavender (EDTA) tube (minimum 3 mL). Store and transport at room temperature. Specimen must be analyzed within 30 hours of collection. EDTA collection tubes available upon request. Please call PLA client services for prompt specimen pickup.