Methodology
Immunohistochemistry (IHC)
Test Description
Mycobacterium tuberculosis is the most common cause of tuberculosis. Immunohistochemical demonstration of mycobacterial antigens is not only useful in establishing mycobacterial etiology, but can also be used as an alternative method to the conventional Ziehl-Neelsen method. Please note this antibody is reactive with other Mycobacterium species including: M. avium, M. phlei, and M. parafortuitum.
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 or 88341 x 1
Turnaround Time
Global: 48 hours, Tech-Only (stain only): 24 hours
Level of Service
Stain Only
Global
New York Approved
Yes