Lab Test

Spinal Muscular Atrophy DNA Test - Carrier/Screening

SMA Panel, SMN

Test Codes

Inegrated Genetics #516, EPCI: LAB8520, Beaker: XSMN1

Specimen Collection Criteria

Collect: Three Lavender-top EDTA tubes or two Yellow-top ACD-A tubes. (Minimum: 10 mL)

Physician Office/Draw Specimen Preparation

Do not centrifuge or freeze. Maintain whole blood at room temperature (20-26°C or 68-78.8°F) prior to transport.

Preparation for Courier Transport

Transport: 14 mL whole blood, room temperature (20-26°C or 68-78.8°F). (Minimum: 10 mL)

Rejection Criteria

  • Frozen specimens.
  • Centrifuged specimens.
  • Specimens not collected and processed as indicated. 

In-Lab Processing

Do not centrifuge or freeze. Maintain whole blood at room temperature (20-26°C or 68-78.8°F) prior to transport.

Transport: 14 mL whole blood, room temperature (20-26°C or 68-78.8°F). (Minimum: 10 mL) 

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 96 hours
Refrigerated (2-8°C or 36-46°F): 96 hours
Frozen (-20°C/-4°F or below): Unacceptable

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to LabCorp Integrated Genetics, Westborough, MA.

Performed

Varies.
Results available in 6-13 days.

Reference Range

By report.

Test Methodology

Polymerase Chain Reaction (PCR).

CPT Codes

81329. Add 81479 when SMN2 analysis is performed.

Contacts

Last Updated

7/6/2021

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