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Connexin Gene Testing

New York
Approved


Genes

GJB3 (Cx31), GJB4 (Cx30.3)

Conditions

  • Erythrokeratodermia Variabilis (EKV)

Clinical Utility

  • Confirmation of the clinical diagnosis
  • Prenatal diagnosis

Lab Method

  • Capillary Sequencing

Test Code

119

CPT Codes*

81479x1

ABN Required

No

Turnaround Time**

3 weeks

Preferred Specimen

2-5 mL Blood - Lavender Top Tube

Alternative Specimen

Buccal Swabs | Dried Blood Spots

*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.