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Genetic Labs

Houston, Texas

Genetic Laboratory
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Medical Genetics Test Details

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Huntington Disease tests available.

Huntington Chorea

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Diagnostic Testing Familial Mutation/Variant Analysis Mutation Testing General Population Prenatal Diagnosis Presymptomatic Testing
Repeat Expansion Analysis Huntington Disease Repeat Expansion Analysis
Test Code: 6034
Huntington Disease Repeat Expansion Analysis
Test Code: 6099

We require that the referring center consult with our laboratory genetic counselors regarding prenatal cases prior to submitting any samples. Please call 1-800-411-4363.
Huntington Disease Repeat Expansion Analysis
Test Code: 6034


Huntington Disease Repeat Expansion Analysis
Test Information: Confirmation of Clinical Diagnosis, Presymptomatic Testing - Available only to patients > 18 years old (Subjects must be enrolled in a center with a written protocol for predictive testing)
Test Details
Test Code: 6034
Special Notes: HD Indication and Informed Consent Form must accompany specimen and requisition form. The normal range is up to 26 copies of the repeat, while the expanded range is 36 or more repeats. Age of onset shows an association with the length of the CAG repeat; however, genotype/phenotype correlations are not precise enough to be used clinically at the present time.

Technical Information
Methodology: PCR and Southern Blot
Gene Name: HTT
Protein Name: Huntingtin
Test Type: Repeat Expansion Analysis
Sample & Shipping Information
Test Requisition: Molecular Diagnostics
Specimen Type: Blood
Requirements: Draw blood in an EDTA (purple-top) tube(s) and send 3-5 cc (Adults/Children) and 3 cc (Infant<2yrs).
Shipping Conditions: Ship at room temperature in an insulated container by overnight courier. Do not heat or freeze.

Turn Around Time: 21 days
Billing Information
List Price: *For Insurance or Institutional Prices, please call.
CPT Codes: 81401x1


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