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CD4 (T4)/CD8 (T8)

% Lymphocytes
Absolute Lymphocyte Count
Lymphocyte Subsets (% Positive and Absolute)
Helper-inducer T lymphocyte
Suppressor/Cytotoxic thymocyte
Helper/Suppressor ratio
Specimen required:

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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.

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