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Huntington disease (detection of expanded CAG triplet-repeat on HTT gene)
HTT
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Methodology

Fragment analysis and RP-PCR


Specimen Requirements


Descriptive Volume /
Concentration 1
Container Transport
temperature
Sample
viability (days) 2
DNA ≥ 100 µL [50 ng/µL] Eppendorf Safe-lock Room temp. n/a
Fetal DNA ≥ 20 µL [25 ng/µL] Eppendorf Safe-lock Room temp. n/a
Peripheral blood ≥ 3 mL EDTA Room temp. 5
Amniotic fluid ≥ 5 mL Sterile tube Room temp. 4
Chorionic villus sampling (CVS) ≥ 30 mg Sterile tube + transport medium Room temp. 4
Cell culture 2 x T25 confluent Sterile tube + transport medium Room temp. 2
1 When it is not possible to collect the minimum volume for the test, please contact CGC Genetics
2 Maximum shipping time to ensure sample quality

Turnaround Time (Days)

- 30

CPT Codes

- 81401

Specialties

- Rare diseases, Neurology / Neuropediatrics


CGC Reference

- 102




Associated Tests


Central nervous system channelopathies (NGS panel of 23 genes)
Parkinson disease and parkinsonism (NGS panel of 56 genes)