TSC Familial Mutation Evaluation

Test Code
523

Test Details


Test code:523
Type of disorder:Epilepsy
Disease(s) tested for:Tuberous Sclerosis
Genes Included: TSC1, TSC2,
Informed Consent Required:This test requires physician attestation that patient consent has been received

Technical Information


Clinical Significance:Detects a single sequence variation in either TSC1 or TSC2 based on proband's mutation.

Typical Presentation: Any combination of seizures, developmental delay, skin lesions, cortical tubers and hamartomas in various parts of the body.
Methodology: Sanger Sequencing, Next Generation Sequencing
Reference Range:No sequence variation detected

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:81403(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: 8 mL (6 mL minimum) whole blood collected in two (lavender-top) EDTA tubes. Pediatric (0-3 years): 2 mL (1 mL minimum)
Instructions: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

Shipping Considerations


Transport Temperature:Room temperature
Set-up/Analytic Time:14-28 days

Additional Resources

Letters of Medical Necessity

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