FISH for Ewings Sarcoma
Test Mnemonic
EWSR
CPT Codes
- 88377 - QTY (1)
Aliases
- Ewing Sarcoma Gene (22q12) translocation
- Fluorescence in Situ Hybridization for Ewings Sarc
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| Six | Slide (s), unstained | Clean container | Ambient | 4 um tissue sections on electrostatically charged slides. Tissue must be formalin fixed. Samples must not be fixed in Prefer or B5. | |
| One | Paraffin block | Clean container | Ambient | Containing representative tumor. |
Days Performed
Mon - Thu
Turnaround Time
5 - 7 days
Methodology
| Name | Description |
|---|---|
| Fluorescent In-Situ Hybridization (FISH) |
Special Info
4 um tissue sections on electrostatically charged slides. Tissue must be formalin fixed. Samples must not be fixed in Prefer or B5. Containing representative tumor.
Clinical Info
Assay is used to detect the Ewings Sarcoma gene (22q12) translocation in Ewings Sarcoma Tumors and desmoplastic small round cell tumors