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Huntington's Disease DNA Test #116
Type of Disorder: Movement Disorders
Typical Presentation: Chorea and idiopathic behavior change (may not be present in children)
Disease(s) tested for: Huntington's disease
Test Details
Test Code: 116
Profiles that contain this test: Chorea Differential Evaluation
Informed Consent Required: Yes
Medicare ABN Required: Yes
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. Athena does not perform predictive HD testing for individuals under the age of 18. In cases of diagnostic HD testing for minors, there must be medically compelling reasons for testing. Click here for more information.
Technical Information
Utility: Detects CAG triplet repeat expansion in the IT15 gene
Methodology: Polymerase Chain Reaction (PCR) and Fragment Analysis by Capillary Electrophoresis with Southern blot confirmation
Reference Value: Normal: > 5 and < 26 CAG trinucleotide repeats
CPT Code(s): 83891(1), 83898(1), 83909(1), 83912(1)
Patents: N/A
Shipping Considerations
Preferred Specimen Requirements
Type: Whole blood
Minimum Volume: 20ml
Collection Tube: Lavender top (EDTA)
Storage Conditions: Refrigerate, avoid freezing
Shipping Conditions: Room temperature, avoid freezing. Ship within 24 hours, Monday - Thursday only.
Test Turnaround: 14-21 days
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