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Test Catalog
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Complete Dopa-Responsive Dystonia (DYT5) Evaluation |
#629 |
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| Type of Disorder: |
Movement Disorders |
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| Typical Presentation: |
Childhood onset of lower limb dystonia, typically in the foot with possible hyperflexia and striatal toe. Dramatic response to low doses of levodopa. |
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| Indications for Testing: |
Childhood onset of dystonia with positive response to low dose levodopa |
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| Disease(s) tested for: |
Dystonia |
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| Test Details |
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| Test Code: |
629 |
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| Profile includes: |
GCH1 Deletion Analysis (DYT5), GCH1 DNA Sequencing Test, TH DNA Sequencing Test (DYT5)
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| Informed Consent Required: |
Yes |
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| Medicare ABN Required: |
Yes |
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| Technical Information |
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| Utility: |
Detects mutations in the GCH1 and TH genes |
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| Methodology: |
DNA Sequencing and MLPA |
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| Reference Value: |
No sequence variations or deletions detected |
| 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(20), 83900(1), 83901(13), 83904(20), 83909(21), 83912(1), 83914(15) |
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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: |
10 ml |
| Collection Tube: |
Lavender top (EDTA) |
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| Shipping Conditions: |
Room temperature, avoid freezing |
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| Test Turnaround: |
21-28 days |
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