PWS Methylation Assay
18 days
Methylation-specific PCR and gel electrophoresis
Accredited Laboratory Partner
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Genetic test identifying deletions or imprinting defects on chromosome 15. Confirms diagnosis of Angelman or Prader-Willi syndrome.
Whole Blood LabCorp buccal swab kit (buccal swab collection kit contains instructions for use of a buccal swab) amniotic fluid or cultured amniocytes (Cultured cells are required for testing Direct specimen can be submitted but a culture fee may be included) Note: Submission of maternal Blood is required for fetal testing
7 mL whole blood, 10 mL amniotic fluid, cultured amniocytes, or LabCorp buccal swab kit
Lavender-top (EDTA) tube, yellow-top (ACD) tube, sterile plastic conical tube or two confluent T25 flasks for fetal testing, or LabCorp buccal swab kit
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 28 days |
| Refrigerated | 28 days |