ARUP Test Catalog
ARUP Consult Guide
Lab Tests Online
 
Lymphocyte Subset - Total Lymphocyte Enumeration (T, B and NK % and Absolute)

Mnemonic:    [T/B Cells]
Name:    Lymphocyte Subset - Total Lymphocyte Enumeration (T, B and NK % and Absolute)
Specimen:    4 mL whole blood from a Lavender top tube. Send to lab ASAP. Pour off tubes are no longer accepted. Hemogard tubes are preferred at ARUP.

Clotted, hemolyzed, refrigerated or frozen specimens are not acceptable.

Specimens must be analyzed within 72 hours of collection in EDTA or within 48 hours of collection in heparin. Some medications may affect immunophenotyping results and should be listed on the patient test request form.
Minimum Spec:    0.5 mL
Transport Temp:    Store and transport sample at Room Temperature.
Spec Stability:    Stable 2 days ambient.
Ref Lab/Code:    ARUP 0095892
  Method:    Flow Cytometry
Note:    Components:
% and Absolute CD4 (Helper T-cells)
% and Absolute CD8 (Suppressor T-cells
% and Absolute CD3 (Total T-cells)
% and Absolute CD19 (B-cells)
% and Absolute NK-cells
CD4:CD8 ratio
Processing Info:    If possible, collect the samples in the AM to make the daily courier departure.