Identifies the alpha/beta chain of the T cell receptor, present on normal T lymphocytes and most T cell neoplasms. It is expressed by thymocytes and a majority of peripheral (alpha/beta TCR-bearing) T cells. It is negative on normal B cells, B cell neoplasms, anaplastic large cell lymphoma, and NK/T cell neoplasms.
A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen typeorOne (1) unbaked, unstained slide for H&E staining (required) and two to three (2-3) positively charged unstained slides (all cut at 4-5 microns) for each test/antibody orderedBlock and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.