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Lab Test Dictionary

Lymphocyte Subset Panel 6 – Total Lymphocyte Enumeration w/CD45RA and CD45RO (0095862)


Quantitative Flow Cytometry


CD3, CD4, CD45RA, CD45RO, CD8, CD19, and NK-cells; Helper T-Cell count; Immune Status-Flow Cytometry; P. jiroveci prophylaxis determination; T-Cell Immunodeficiency Extended Profile

Specimen Type

Whole Blood

Performing Lab


Epic ID

Other Reference Test

Lab Test Days


Standard TAT

1-3 Days

Collection Information

Specimen Required

0.5-4 mL Whole Blood

Container Type

Lavender (EDTA)

Collection Instructions

Collect Monday-Friday only, no weekends or holidays. Specimen must arrive at ARUP within 72 hours of collection. Critical room temp. Whole blood collected in a sodium or lithium heparin (green-top) tube is also acceptable. Some medications may affect immunophenotyping results and should be provided.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp: 72 Hours (48 Hours for heparin); Refrigerated: Unacceptable; Frozen: Unacceptable

Rejection Criteria

Clotted; Hemolyzed

Test Volume Required

4 mL Whole Blood

Minimum Test Volume

0.5 mL Whole Blood

Processing Instructions

Complete an ARUP requisition and submit with specimen ROOM TEMP ONLY. Specimen must arrive at ARUP within 72 hours of collection. Call Apollo Courier Service for pick-up Monday-Friday.

Included Tests

Absolute CD19, % Natural Killer Cells, Absolute Natural Killer Cells, Absolute CD45RO, % CD45RO, Absolute CD45RA, % CD45RA, Absolute CD3, % CD3, Absolute CD4, Absolute CD8, % CD4, % CD8, % CD19 and CD4:CD8 Ratio.

CPT Codes

86355, 86357, 86359, 86360, 86356 (x2)