Williams Syndrome FISH Analysis


Related Gene(s): CLIP2, ELN, GTF2I, GTF2IRD1, LIMK1

Williams syndrome (chromosome location 7q11.23) FISH (fluorescence in situ hybridization) is offered for diagnosis of individuals with clinical features of Williams syndrome, including intellectual disability, unique personality characteristics, cardiovascular disease, and connective tissue abnormalities. The detection rate of FISH analysis for this disorder is approximately 99%.


Specimen Requirements

Prenatal

  • Amniotic fluid: Minimum total specimen size 15 mL
  • Chorionic villi: Minimum total specimen size 4 mg

Postnatal

  • Whole blood: Minimum 5-10 mL in sodium heparin tube (green top)

Ordering Information

Shipping

  • Ship at room temperature

Turnaround Time

  • Prenatal: 5-7 days
  • Postnatal: 7-10 days


Resources

Prenatal Test Requisition with Natera NIPT
Prenatal Test Requisition with Sequenom NIPT
General Test Requisition