T-cell Subsets, CD4:CD8 Ratio and Count
Expected Turnaround Time
3 days
Stated turn-around-times (TATs) are for clinical use only and subject to change based on biopharma protocol requirements. Final TATs will be specified in the biopharma study contract.
Stated turn-around-times (TATs) are for clinical use only and subject to change based on biopharma protocol requirements. Final TATs will be specified in the biopharma study contract.
Clinical Information
Flow cytometry panel inclusive of CD3, CD4, and CD8 for T-cell subset analysis. Reporting includes CD4:CD8 ratio and count. *Testing performed by affiliate laboratory.
Requisition Forms
Specimen Requirements
Specimen Requirements
Whole Blood: 4 mL (minimum of 0.5 mL with 107 cells), NaHep preferred (EDTA accepted)
Specimen Stability
Specimen stable for 48 hours at 4°C.
Storage Requirements
2°C to 8°C
Shipping Conditions
Refrigerated
Shipping Recommendations
REFRIGERATED, Use a refrigerated (NOT FROZEN) gel pack in the shipment to protect from extreme temperatures. Separate gel pack from specimen
Specimen Rejection Criteria
Specimens stored at incorrect temperature; Non-viable specimens; Specimens in inappropriate anticoagulant; Too few cells; Hemolysis; Specimen clotted
Test Details
Synonyms
CD4/CD8 count; T helper / T suppressor analysis; lymphocyte subsets
Keywords
Flow Cytometry, primary immunodeficiencies, HIV, immune dysfunction
Test Method
Flow cytometry
Methodology Category
Flow Cytometry
Associations
HIV, CD4