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Test Catalog
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Chorea Differential Evaluation |
#402 |
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| Type of Disorder: |
Movement Disorders |
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| Typical Presentation: |
Chorea, ataxia or progressive myoclonus epilepsy and idiopathic behavior change (may not be present in children) |
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| Disease(s) tested for: |
Huntington's disease, Dentatorubralpallidoluysian Atrophy |
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| Test Details |
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| Test Code: |
402 |
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| Profile includes: |
Huntington's Disease DNA Test, DRPLA DNA Test
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| Informed Consent Required: |
Yes |
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| Medicare ABN Required: |
Yes |
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| Special Notes: |
Athena provides an Action Pack for presymptomatic testing which includes literature and an agreement that must be signed by the clinician and returned prior to testing. |
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| Technical Information |
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| Utility: |
Detects CAG triplet repeat expansion in the ITI5 gene and CAG triplet repeat expansions in the DRPLA gene |
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| Methodology: |
Polymerase Chain Reaction (PCR), Fragment analysis and Southern blot |
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| Reference Value: |
DRPLA normal <u><</u> 35 CAG trinucleotide repeats <br> Huntington's normal <u>></u> 5 and <u><</u> 26 CAG trinucleotide repeats |
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| Patents: |
N/A |
| 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(2), 83909(1), 83912(1) |
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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: |
20ml |
| Collection Tube: |
Lavender top (EDTA) |
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| Storage Conditions: |
Refrigerate, avoid freezing |
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| Shipping Conditions: |
Room temperature, avoid freezing. Ship within 24 hours, Monday - Thursday only. |
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| Test Turnaround: |
14-21 days |
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