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Test Code TCP T-Cell Subsets, Naive, Memory, and Activated, Blood

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Whole Blood EDTA


Ordering 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

Report Available

3 to 4 days

Specimen Retention Time

4 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject