Confirmation of diagnosis in patients suspected of having either Prader-Willi syndrome (PWS) or Angelman syndrome (AS) based on clinical assessment or previous laboratory analysis Prenatal diagnosis in families at risk for PWS or AS
Specimen Type
Blood
Container
Lavender Top Tube
Collection Instructions
Submit only 1 of the following specimens Specimen Type: Whole blood Container/Tube: Preferred: Lavender top (EDTA) or yellow top (ACD)Specimen Volume: 3 mL( 1 mL min) Collection Instructions:1. Invert several times to mix blood.2. Send specimen in original tube. Specimen Stability: Room Temperature (preferred)/Refrigerated Prenatal Specimens Due to the complexity of prenatal testing, consultation with the laboratory is required for all prenatal testing. Specimen Type: Amniotic fluid Container/Tube: Amniotic fluid container Specimen Volume: 20 mL(10 mL min) Specimen Stability Information: Refrigerated Container/Tube: T-25 flask Specimen Volume: 2 flasks Collection Instructions: Submit confluent cultured cells from another laboratory. Stability Information: Room Temperature
