FISH Aneuploid Screen


Abbrev Code:FSHANE   
Order Code:LAB4688Order Name:FISH Aneuploid Screen
Synonyms:Aneuploidy Screen, Amniotic Fluid; Prenatal FISH; FISH Aneuploidy, Prenatal, Congenital
Methodology:FISH Interphase. Prenatal/Congenital.
CPT Codes: 88275 x1, 88271 x1, 88271 x4, 88291 x1
Turnaround Time:Performed daily Mon-Fri, results are reported within 1-2 days.
Special Instructions:Test request form requires:
  • Date and time of specimen collection
  • Specimen type
  • Patient information: date of birth, sex and medical record number
  • Ordering physician or genetic counselor, and contact numbers
  • Reason for referral
  • Clinical status
  • Gestational age
  • Information regarding medications or transfusions
  • Previous or pending genetic testing results

A signed informed consent in the patient's medical record is required. The consent should not be sent to the laboratory. A link to the Genetic Testing Consent Form is provided as a convenience for the providers and genetic counselors. See Associated Links.
Associated Links:

Genetic Testing Consent Form



Collection Instructions

Specimen:Amniotic Fluid
Optimal Volume:20 mL
Minimum\Peds Volume:10 mL
Container:Sterile tube
Collection Instructions:Collect amniotic fluid during 14-16 week gestation; maintain sterility during collection. Transport to laboratory as soon as possible. Use sterile technique.


Processing and Shipping

Specimen Processing:Store at room temperature.
Specimens must be received in the Cytogenetics laboratory Monday-Friday, weekends and holidays by 4:30 pm. Specimens received after these cutoffs will be processed the following day.
Shipping Instructions:Ship at room temperature as soon as possible.
Stability:For optimal testing results the specimen must arrive within 24 hours.
Test Performed at or Referral Lab Cytogenetics  (UMMC East Bank)


Click HERE to Report test errors or omissions.
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