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HelpTest Code GLIC CD8 T-Cell Immune Competence, Global, Blood
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
WB Sodium HeparinShipping Instructions
Testing performed Monday through Friday. Specimens not received by 4 p.m. Central time on Friday may be canceled.
Samples arriving on the weekend and observed holidays may be canceled.
Collect and package specimen as close to shipping time as possible. Ship specimen overnight in an Ambient Shipping Box-Critical Specimens Only (T668) following the instructions in the mailer.
It is recommended that specimens arrive within 24 hours of collection.
Necessary Information
Ordering healthcare professional name and phone number are required.
Specimen Required
Supplies: Ambient Shipping Box-Critical Specimens Only (T668)
Container/Tube: Green top (sodium heparin)
Specimen Volume: 15 mL
Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.
Specimen Minimum Volume
10 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| WB Sodium Heparin | Ambient | 48 hours | GREEN TOP/HEP |
Reference Values
Interferon-gamma (IFN-gamma) expression (as % CD8 T cells): 10.3-56.0%
CD107a/b expression (as % CD8 T cells): 8.5-49.1%
Reference values have not been established for patients who are <19 years of age.
Day(s) Performed
Monday through Friday
CPT Code Information
86356 x 2
Report Available
3 to 6 daysSpecimen Retention Time
PBMC: 7 days.Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |