Methodology
Immunohistochemistry (IHC)
Test Description
T-cell receptor delta (TCR delta) is used as a phenotypic marker for TCR delta-expressing T-cells. TCR is a heterodimer composed of either alpha/beta or gamma/delta. TCR delta is expressed by thymocytes and a majority of peripheral (gamma/delta TCR-bearing) T-cells. Evaluation may help in the differential diagnosis of T-cell lymphomas.
Specimen Requirements
- A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen type
or - One (1) unbaked, unstained slide cut at 4-5 microns for H&E staining (required) and two to three (2-3) positively charged unstained slides cut at 3-4 microns for each test/antibody ordered
- Block and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
Storage & Transportation
Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.
CPT Code(s)*
88342x1 or 88341x1
Turnaround Time
24 hours
Level of Service
Stain Only
New York Approved
Yes