Detects deletions and duplications involving the SNRPN gene on 15q11.2 within the Prader-Willi syndrome (PWS) critical region. Reciprocal duplication of this region is associated with chromosome 15q11-q13 duplication syndrome.
If both chromosome and FISH tests are ordered, only 1 tube is needed.
Test Ordering For Excellian Users:
Order test place holder according to specimen type.
Answer the questions in Excellian to select the test name and complete the test order.
Specimen = Congenital Blood (LAB4280F)
For prenatal diagnosis, please call the lab and discuss with the Cytogenetics lab director.
Dk green Sodium heparin (Na hep), no gel
Ambient
Do not heat or freeze
Fluorescence in situ Hybridization (FISH)
Interpretative report