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Test Catalog
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SMA Plus (Reflexive) |
#214 |
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| Type of Disorder: |
Motor Neuron Disease |
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| Typical Presentation: |
Spinal muscular atrophy is characterized by progressive muscle weakness caused by the degeneration of lower motor neurons that are responsible for controlling voluntary muscle movement including walking, crawling, swallowing, and head and neck control. Age of onset ranges from before birth to adolescence or young adulthood. The most common type of SMA is associated with respiratory failure and death before the age of two. |
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| Indications for Testing: |
Symptomatic individuals consistent with SMA |
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| Disease(s) tested for: |
Spinal muscular atrophy (SMA) |
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| Test Details |
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| Test Code: |
214 |
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| Profile includes: |
SMN DNA Sequencing Test, Spinal Muscular Atrophy Diagnostic Test
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| Informed Consent Required: |
Yes |
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| Medicare ABN Required: |
Yes |
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| Special Notes: |
Since 95% of individuals affected with SMA will have a homozygous deletion of SMN1, it is recommended that the patient be tested first for deletions. The test will stop once a positive result is found and only the portion of the test performed is charged. |
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| Technical Information |
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| Utility: |
Confirm diagnosis of SMA caused by the mutations in the SMN1 gene. |
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| Methodology: |
MLPA and DNA Sequencing |
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| Reference Value: |
Two deletions and no point mutations identified in SMN1 or SMN2 |
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| Patents: |
6,080,577, 7,033,752 |
| CPT Coding |
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The CPT codes provided are based on AMA guidelines
and are for informational purposes only. CPT coding
is the sole responsibility of the billing party.
Please direct any questions regarding coding to
the payer being billed.
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| Stacked CPT Code(s): |
83891(1), 83898(8), 83900(1), 83901(14), 83904(8), 83909(9), 83912(1), 83914(16)
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| Shipping Considerations |
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| Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form. |
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| Preferred Specimen Requirements |
| Type: |
Whole blood |
| Minimum Volume: |
2-4 mL |
| Collection Tube: |
Lavender top (EDTA) |
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| Alternate
Specimen Requirements |
| Type: |
Whole blood |
| Minimum Volume: |
2-4 mL |
| Collection Tube: |
Yellow top (ACD-A or ACD-B) |
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| Storage Conditions: |
Room temperature: 5 days; Refrigerated: 14 days; Frozen: Unacceptable |
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| Shipping Conditions: |
Room temperature. Clotted specimens will be rejected. |
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| Test Turnaround: |
7-12 days |
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