Methodology
Immunohistochemistry (IHC)
Test Description
This monoclonal antibody (B72.3) to tumor-associated glycoprotein recognizes a tumor-associated oncofetal antigen (TAG-72) expressed by a wide variety of human adenocarcinomas. This antigen is expressed by most invasive ductal breast, colonic, pancreatic, gastric, esophageal, lung, ovarian and endometrial adenocarcinomas. This antigen is also expressed on normal secretory endometrium, but not on other normal tissues.
Specimen Requirements
- A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen type
or - One (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 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)*
88342 x 1 or 88341 x 1
Turnaround Time
24 hours
Level of Service
Stain Only
New York Approved
Yes