FISH (Fluorescent in Situ Hubridization) Locus Specific


Sunquest Code:FISHCGCoPath Code:FISHLOCUS
Epic Code:LAB4767  
Sunquest Code (non-Epic sites):FISHCG  
Synonyms:Prader-Willi/Angelman, Williams Syndrome, DiGeorge, Cri-du-chat
Methodology:FISH Locus Specific
CPT Code:88273, 88271, 88291, 88230
Turnaround Time:Results are reported within 7-21 days.
Special Instructions:Consultation must occur with Cytogenetics Lab (612-273-3171) prior to order. Charges will vary with type of probe required, as determined by Cytogenetics Lab. Each probe ordered will accrue a probe and analysis charge. Test request form requires:
  • Date and time of specimen collection
  • Specimen type
  • Patient information: date of birth, sex and medical record number
  • Orderin physician and contact number
  • Reason for referral
  • Clinical status
  • Information regarding medications or transfusions
  • Previous or pending genetic testing results
Associated Links:

Genetic Testing Consent Form



Collection Instructions

Specimen:Whole blood
Optimal Volume:5 mL
Minimum\Peds Volume:3 mL
Causes for Rejection:Clotted or frozen specimen.


Processing and Shipping

Specimen Processing:Store at room temperature. Do not refrigerate or freeze. Do not process.
Specimens must be received in the Cytogenetics Laboratory Mon-Fri by 5:30 pm. Weekends and holidays by 4:30 pm. Specimens received after these cutoffs will be processed the following day.
Shipping Instructions:Ship at room temperature.
Test Performed at or Referral Lab Cytogenetics  (UMMC-East Bank)


Click HERE to Report test errors or omissions.
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