A useful biomarker for cytotoxic T-lymphocytes (CTL) and NK cells, and may be useful in differentiating between tumors arising from these cell types and tumors arising from other hematolymphoid cell types. It is also useful for identifying anaplastic large cell lymphoma, large granular lymphocytic leukemias, hepatosplenic T-cell lymphomas, intestinal T-cell lymphomas, NK-like T-cell lymphomas, NK-cell lymphomas, nasal T/NK-cell lymphomas, and subcutaneous panniculitic T-cell lymphomas of T or NK phenotype.
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.