Laboratory: Clinical Immunology
Test Name:
Test Code: PBTS
Clinical Information:
Determining the presence of naive, memory, and activated T cells in various clinical contexts including autoimmune diseases, immunodeficiency states, T-cell recovery posthematopoietic stem cell transplant, DiGeorge syndrome, and as a measure for T-cell immune competence.
For basic Naive and Memory T Cell quantitation, order RTE4.
Collection Devices:
Preferred Device:
Alternate Device:
1 - Microtainer(s) - EDTA, NO GEL (0.5 mL) to fill line
Specimen Required:
Blood: 4.0 mL
Pediatric Blood: 0.5 mL

A CBC and differential must also be performed.
Send specimens in original tube.  DO NOT ALIQUOT.
Specimens are required to be received in the HSC Immunology Laboratory weekdays and by 4:00 p.m. on Fridays.  It is recommended that specimen be received in laboratory within 24 hours.  Draw and package specimen as close to shipping time as possible.  Sample must be shipped at ambient temperature.
Samples arriving on the week-end may be cancelled.
Reference Values:
The appropriate age-related reference values will be provided on the report.
See Also:
More Information:
Testing includes Naive, Memory and Activated T Cells.  Memory T Cells are further subdivided into Central Memory T cells (Tcm) and Effector Memory T Cells (Tem).
For Basic Naive and Memory T Cell quantitation, order RTE4.