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THAP1 DNA Sequencing Test (DYT6)
Test Code92915
CPT Codes
81404
Preferred Specimen
8 mL whole blood collected in two EDTA (lavender-top) tube
Pediatric (0-3 Years): 2 mL
Pediatric (0-3 Years): 2 mL
Minimum Volume
6 mL • Pediatric: 1 mL
Instructions
Physician Attestation of Informed Consent- This germline genetic test requires physician attestation that patient consent has been received. Non-critical
Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the test requisition.
Higher blood volumes ensure adequate DNA quantity, which varies with WBC, specimen condition, and need for confirmatory testing. Patients 0-3 years have higher WBC, yielding more DNA per mL of blood.
Notes: DNA yields and quality are better in fresh specimens. However, when necessary, most genetic tests are successful from DNA purified from whole blood that is several days old.
Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the test requisition.
Higher blood volumes ensure adequate DNA quantity, which varies with WBC, specimen condition, and need for confirmatory testing. Patients 0-3 years have higher WBC, yielding more DNA per mL of blood.
Notes: DNA yields and quality are better in fresh specimens. However, when necessary, most genetic tests are successful from DNA purified from whole blood that is several days old.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 10 days
Refrigerated: 10 days
Frozen: Unacceptable
Refrigerated: 10 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Methodology
Sanger Sequencing
FDA Status
This test was developed and its analytical performance characteristics have been determined by Athena Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: As needed; Report available: 14-28 days
Reference Range
See Laboratory Report
Clinical Significance
Detection for sequence variants THAP1 gene in patients with Dystonia 6, Torsion (DYT6). The dystonia involves the limbs and craniocervical region, and speech is often affected. DYT6 often progresses to generalized dystonia and the onset is in childhood.
Performing Laboratory
Athena Diagnostics, Inc.
200 Forest Street, 2nd Floor
Marlborough, MA 01752
