ARUP's Laboratory Test Directory

CHOP Gene Rearrangement by FISH : 0049378

Mnemonic: CHOPFISH

Methodology: Fluorescence in situ Hybridization
Performed: Wed-Thu
Reported: 4-12 days
Specimen Required: Collect: Tumor tissue

Storage/Transport Temperature: Paraffin-embedded, formalin-fixed tissue block at 20-25°C. Protect paraffin block from excessive heat. Ship in cooled container during summer months. Include surgical pathology report. Also acceptable: 6 tissue sections (from formalin-fixed, paraffin-embedded tissue block) on 6 "positively charged" or "plus" slides.

Unacceptable Conditions: No tumor in tissue. Frozen specimens and pecimens fixed/processed in alternative fixatives (alcohol, Prefer®).

Stability (collection to initiation of testing): Ambient: Indefinitely; Refrigerated: Acceptable; Frozen: Unacceptable
Reference Interval:
By report.
Interpretive Data: This assay indicates if translocation has occurred, but not the specific translocation partner. Approximately 95% of all translocations involve the translocation partner on chromosome 16. The remaining 3-6% have chromosome 22 as the translocation partner.

Please refer to Statement A in the Compliance Statements section in the front of the Laboratory Test Directory.
CPT Code(s): 88368 x2
 
 

 

 

 
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