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Test ID GLIC CD8 T-Cell Immune Competence, Global, Blood

Useful For

Determining overimmunosuppression within the CD8 T-cell compartment, when used on transplant recipients and patients with autoimmune disorders receiving therapy with immunosuppressant agents

Method Name

Flow Cytometry

Reporting Name

CD8 Immune Competence, B

Specimen Type

WB Sodium Heparin

Shipping Instructions

Specimens are required to be received in the laboratory weekdays and by 4 p.m. on Friday. Draw 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 draw.


Samples arriving on the weekend and observed holidays may be canceled.

Necessary Information

Ordering physician's 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 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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

86356 x 2

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GLIC CD8 Immune Competence, B In Process


Result ID Test Result Name Result LOINC Value
30643 IFN-g 95204-4
30644 CD107a/b 95203-6
30645 Interpretation 69052-9

Test Classification

This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Report Available

3 to 6 days

NY State Approved