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LQTS Panel

New York
Approved


Genes

AKAP9, ANK2, CACNA1C, CALM1, CALM2, CALM3, CAV3, KCNE1, KCNE2, KCNH2, KCNJ2, KCNJ5, KCNQ1, SCN4B, SCN5A, SNTA1, TRDN

Conditions

  • Long QT Syndrome (LQTS)

Clinical Utility

  • Confirmation of a clinical diagnosis in symptomatic patients
  • Risk assessment for asymptomatic family members of a proband with LQTS
  • Differentiation of hereditary LQTS from acquired (non-genetic) causes of LQTS
  • Prenatal diagnosis in families with a known pathogenic variant

Lab Method

  • Deletion/Duplication Analysis
  • Next-Gen Sequencing

Test Code

727

CPT Codes*

81403 x1, 81404x1, 81406x2, 81414x1

ABN Required

No

Turnaround Time**

4 weeks

Preferred Specimen

2-5 mL Blood - Lavender Top Tube

Alternative Specimen

Buccal Swabs

*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.

**Reporting times are typical and begin once the sample(s) are received at the GeneDx laboratory, but could be extended in situations outside GeneDx’s reasonable control.