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
SixSlide (s), unstainedClean container Ambient4 um tissue sections on electrostatically charged slides. Tissue must be formalin fixed. Samples must not be fixed in Prefer or B5.
OneParaffin blockClean container AmbientContaining 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