EWSR1 (22q12) Gene Rearrangement by FISH

3001305
copy
 

Copy Utility


emailprint
Example Reports
Negative
Positive

Ordering Recommendation

Diagnose members of the Ewing sarcoma family of tumors (ESFT). Does not identify the translocation partner.

Mnemonic

EWSR1_FISH

Methodology

Fluorescence in situ Hybridization (FISH)

Performed

Mon-Fri

Reported

3-7 days

New York DOH Approval Status

Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.

Specimen Required

Patient Preparation
Collect

Tumor tissue.

Specimen Preparation

Formalin fix (10 percent neutral buffered formalin) and paraffin embed tissue. Protect paraffin block from excessive heat.  Transport tissue block or 5 unstained (4-micron thick sections) positively charged slides in a tissue transport kit (ARUP supply #47808) available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787 (kit recommended but not necessary). (Min. 2 slides)

Storage/Transport Temperature

Room temperature. Also acceptable: Refrigerated. Ship in cooled container during summer months.

Unacceptable Conditions

Specimens fixed or processed in alternative fixatives (alcohol, Prefer) or heavy metal fixatives (B-4 or B-5). No tumor in tissue. Decalcified specimens.

Remarks

Include surgical pathology report.
If multiple specimens (blocks or slides) are sent to ARUP, they must be accompanied by one of the following: an order comment indicating that the ARUP pathologist should choose the specimen most appropriate for testing (e.g., "Choose best block"), or individual orders for each sample submitted. A Pathologist Block Selection Fee (ARUP test code 3002076) will be added to orders that utilize the first option. If multiple specimens are sent to ARUP without a request for pathologist block/slide selection or individual orders, they will be held until clarification is provided.

Stability

Ambient: Indefinitely; Refrigerated: Indefinitely; Frozen: Unacceptable

Reference Interval

Interpretive Data

Refer to report.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Analyte Specific Reagent (ASR)

Note

Hotline History

N/A

CPT Codes

88366

Are you an ARUP Client? Click here for your pricing.

Components

Component Test Code* Component Chart Name LOINC
3000639 EWSR1 FISH Reference Number
3000640 EWSR1 FISH Source
3000641 EWSR1 FISH Result
3000703 Scoring Method 81304-8
3002940 Total Cell Count 78236-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • 22q12
  • EWSR1 FISH
  • EWSR1 Gene rearrangement
EWSR1 (22q12) Gene Rearrangement by FISH