Methodology
Immunohistochemistry (IHC)
Test Description
A combination of Melan A/Ki67 is useful in the identification of proliferative index in melanocytic neoplasms. Melan A is a differentiation antigen that is expressed in melanomas, Ki67 is expressed in proliferating cells during late G1, S, M and G2 phases of the cell cycle.
Specimen Requirements
- A formalin-fixed, paraffin-embedded (FFPE) tissue block is preferred specimen type
or - One (1) unbaked, unstained slide cut at 4-5 microns for H&E staining (required) and two to three (2-3) positively charged unstained slides cut at 3-4 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, making sure cold pack is not in direct contact with specimen.
CPT Code(s)*
88344x1
Turnaround Time
24 hours
Level of Service
Stain Only
New York Approved
Yes