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Regional Medical Lab
Test Directory


Lymphocyte Absolute CD4 and CD8

Order Name T HELP/SUP
Test Number: 5603200
Revision Date 05/22/2019
Test Name Methodology LOINC Code
CD8 Lymphocyte Count
Flow cytometry  
T Helper and Suppressor Lymphs
Flow cytometry 54218-3 
T4 Lymphocytes
Flow cytometry  
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 4.5 mL (1mL) Whole Blood EDTA (Lavender Top) Room Temperature
Instructions Deliver to laboratory (flow cytometry) ASAP.
DO NOT Centrifuge or Refrigerate. Collect Monday through Friday only!
Specimen must be received in the lab section by Friday afternoon or collect sample on Monday.
Specimen stability: 48hrs Room Temperature.
Testing Schedule Mon - Fri 
Expected TAT 2 Days  
Clinical Use Immunophenotype of T lymphocytes. 
Notes This panel is also known as: T Helper and Suppressor Cells (CD4/CD8)
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CPT Code(s) 86360 (CD4/CD8 combined with ratio bill single 86360)
Lab Section Flow Cytometry