Allina Health Laboratory a part of Abbott Northwestern Hospital



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Test Name:Prader-Willi syndrome (PWS) FISH
Test Number:4280F
Collect:5.0 mL Na Heparin whole blood - Dk Green
Minimum Volume:2.0 mL Na Heparin whole blood - Dk Green
Alternate Collect:1.0 - 2.0 mL Cord Blood collected in Na Heparin
Container:Dk Green top (Na Heparin) tube - NO gel
Processing:Submit entire specimen, UNSPUN
Transport/Stability:Ambient - Do not heat or freeze
Alternate Names:SNRPN
Chromosome 15q11.2 deletion / duplication
Performing Lab:AHL - Cytogenetics; Z
Days Set Up:Mo - Fr
Expected TAT:14 days
Ref. Ranges:Interpretative report
Processing Details:
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.

Specimen collection instructions

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.
Method:Fluorescence in situ Hybridization (FISH)
CPT Codes:Bill Code: PRW

88271 x3
88230 – Culture (if appropriate)
Supply Connection:Sodium Heparin Collection Tubes
Date Created:08/17/2015
Revised Date:09/01/2015