Identifies a cell surface-associated protein and positively stains normal tissue including B-cell precursors and plasma cells and almost all plasmacytic/plasmablastic neoplasms. It is positively stained in tumors such as myeloma and primary effusion lymphoma. It is also expressed by a significant subset of normal and neoplastic epithelia.

Turnaround Time
24 hrs
Specimen Requirements

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.

Storage and Transportation

Use cold pack for transport. Make sure cold pack is not in direct contact with specimen.

CPT Codes
88342 x 1 or 88341 x 1