Methodology
Immunohistochemistry (IHC)
Test Description
H3K27me3 (trimethylation at lysine 27 of histone H3) is involved in the modification of DNA by protein Histone H3. Complete loss of H3K27me3 expression by immunohistochemistry can be useful in the diagnosis of malignant peripheral nerve sheath tumors (MPNST).
Clone: C36B11
Staining pattern: Nuclear
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
- Note: 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)*
88342x1 or 88341x1
Turnaround Time
24 Hours
Level of Service
Stain Only
New York Approved
Yes