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HelpT-Cell Subsets, Naive, Memory, and Activated, Blood
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Whole Blood EDTAOrdering Guidance
This assay provides quantitative information on various T-cell subsets in blood; it does not provide any information on the antigen-specific or otherwise functional state of the T cells.
To assess the overall functional state of T cells, order either LPMGF / Lymphocyte Proliferation to Mitogens, Blood or LPAGF / Lymphocyte Proliferation to Antigens, Blood (using Candida and tetanus antigens).
To assess cytomegalovirus (CMV)-specific immune competence, order CMVC8 / Cytomegalovirus (CMV) CD8 T-Cell Immune Competence, Quantitative Assessment by Flow Cytometry, Blood.
Shipping Instructions
Testing performed Monday through Friday. Specimens not received by 4 p.m. Central time on Fridays may be canceled.
Specimens arriving on the weekend and observed holidays may be canceled.
Collect and package specimen as close to shipping time as possible.
It is recommended that specimens arrive within 24 hours of collection.
Necessary Information
Ordering healthcare professional's name and phone number are required.
Specimen Required
Container/Tube: Lavender top (EDTA)
Specimen Volume: 3 mL
Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.
Additional Information: For serial monitoring, it is recommended that specimens are collected at the same time of day.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole Blood EDTA | Ambient | 72 hours | PURPLE OR PINK TOP/EDTA |
Reference Values
The appropriate age-related reference values will be provided on the report.
Day(s) Performed
Monday through Friday
CPT Code Information
86356 x 7
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| TCP | T Cell Phenotyping, Advanced | 96493-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 609282 | CD4 (T Cells) | 24467-3 |
| 609283 | CD8 (T Cells) | 14135-8 |
| 29151 | %CD4+CD45RA+ naive T cells | 89360-2 |
| 29152 | %CD4+CD62L+CD27+ naive T cells | 89340-4 |
| 29153 | %CD8+CD45RA+ naive T cells | 82744-4 |
| 29154 | %CD8+CD62L+CD27+naive T cells | 89339-6 |
| 29155 | %CD4+CD45RO+ memory T cells | 89362-8 |
| 29156 | %CD4+CD62L+CD27+CD45RO+ (Tcm) | 89338-8 |
| 29157 | %CD4+CD62L-CD27-CD45RO+ (Tem) | 89337-0 |
| 29158 | %CD8+CD45RO+ memory T cells | 89336-2 |
| 29159 | %CD8+CD62L+CD27+CD45RO+ (Tcm) | 89335-4 |
| 29160 | %CD8+CD62L-CD27-CD45RO+ (Tem) | 89334-7 |
| 29161 | %Activated CD4 T cells (4+CD25+) | 89431-1 |
| 29162 | %CD4+HLA DR+CD28+ T cells | 89333-9 |
| 29163 | %CD8+HLA DR+CD28+ T cells | 89332-1 |
| 29164 | CD4+CD45RA+ naive T cells | 26759-1 |
| 29165 | CD4+CD62L+CD27+ naive T cells | 89331-3 |
| 29166 | CD8+CD45RA+ naive T cells | 82743-6 |
| 29167 | CD8+CD62L+CD27+naive T cells | 89330-5 |
| 29168 | CD4+CD45RO+ memory T cells | 85792-0 |
| 29169 | CD4+CD62L+CD27+CD45RO+ (Tcm) | 89329-7 |
| 29170 | CD4+CD62L-CD27-CD45RO+ (Tem) | 89328-9 |
| 29171 | CD8+CD45RO+ memory T cells | 85790-4 |
| 29172 | CD8+CD62L+CD27+CD45RO+ (Tcm) | 96492-4 |
| 29173 | CD8+CD62L-CD27- CD45RO+ (Tem) | 89327-1 |
| 29174 | Activated CD4 T cells (4+CD25+) | 26982-9 |
| 29175 | CD4+HLA DR+CD28+ T cells | 89326-3 |
| 29176 | CD8+HLA DR+CD28+ T cells | 89325-5 |
| 29178 | Interpretation | 69052-9 |