Ataxia, Complete Dominant Evaluation

Test Code
6900

Test Details


Test code: 6900
Type of disorder: Movement Disorders
Disease(s) tested for: Autosomal Dominant Ataxia
Genes Included: AFG3L2, ATN1, ATXN1, ATXN10, ATXN2, ATXN3, ATXN7, ATXN8OS, CACNA1A, CACNB4, EEF2, FGF14, ITPR1, KCNA1, KCNC3, KCND3, PDYN, PPP2R2B, PRKCG, SLC1A3, SPTBN2, TBP, TGM6, TTBK2, VAMP1
Informed Consent Required: This test requires physician attestation that patient consent has been received

Technical Information


Clinical Significance: This test includes 10 repeat expansion tests and 16 genes sequenced that identifies mutations and repeat expansions associated with autosomal dominant forms of ataxia. Smaller panels of its components are also available.
Methodology: Next Generation Sequencing, Repeat Expansion Detection by PCR, Southern Blot
Reference Range: Accompanies report

CPT Coding


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.

CPT: 81443(1)

Specimen Requirements


Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.

Specimen Type: Whole blood
Specimen Stability: Room temperature: 10 days, Refrigerated: 10 days, Frozen: Unacceptable
Specimen Requirements: 10 mL (8 mL minimum) whole blood collected in two (lavender-top) EDTA tubes.

Shipping Considerations


Transport Temperature: Room temperature
Set-up/Analytic Time: 21-28 days

Additional Resources

Letters of Medical Necessity

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