Casandra
Casandra Test Code NG30934Version 1 (DRAFT)
Performing Lab
EWSR1 (22q12)
Clinical Use
Order TestUse
This FISH (Fluorescence In Situ Hybridization) test detects structural rearrangements involving the EWSR1 gene at chromosome region 22q12, supporting the diagnosis of Ewing sarcoma, primitive neuroectodermal tumor (PNET), and related neoplasms.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
New York Approved
Methodology
Chromosomal / Cytogenetics (FISH)
Biomarkers
No genes
GeneCopy Number • Categorical (e.g., Positive / Negative / Indeterminate)
Unknown CNV
Copy Number RegionCopy Number • Categorical (e.g., Positive / Negative / Indeterminate)
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Tissue (FFPE)
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Send paraffin block. Also send circled H&E slide for tech-only (required). Cut slides: H&E slide (required) plus 4 unstained slides cut at 4‑5 microns. Circle H&E slide for tech‑only
Storage Instructions
Use cold pack for transport, making sure cold pack is not in direct contact with specimen. NYS clients please provide date and time of Collection.