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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 and Transportation

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

CPT Code(s)*
88344x1
New York Approved
Yes
Level of Service
Stain Only
Turnaround Time

24 hours

*The CPT codes provided with our test descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.