Spinocerebellar Ataxia Type 7 Expansion Analysis

Turnaround Time

21 days

CPT Code(s)

81181

Cost

$500

Genes

• Spinocerebellar ataxia

Triplet repeat-primed PCR

The preferred sample type is 3-5 ml of peripheral blood collected in an EDTA (purple top) tube. Extracted DNA and saliva are also accepted for this test. Saliva samples must be submitted in an approved saliva kit. Contact the lab to receive a saliva kit or to have one sent to your patient.

The specimen should be kept at room temperature and delivered via overnight shipping. If shipment is delayed by one or two days, the specimen should be refrigerated and shipped at room temperature. Do not freeze the specimen. Samples collected on Friday can be safely designated for Monday delivery.

Prenatal testing may be available in cases where one parent is known to have an expanded allele. Please contact the lab to discuss specific cases prior to sending a sample.