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Congenital Insensitivity to Pain and Anhidrosis (NTRK1)




  • Congenital Insensitivity to Pain with Anhidrosis
  • Hereditary Sensory and Autonomic Neuropathy IV (HSAN IV)

Clinical Utility

  • Confirmation of the clinical diagnosis
  • Carrier testing in unaffected family members
  • Prenatal diagnosis in families with an affected child and known mutation(s)

Lab Method

  • Capillary Sequencing
  • Deletion/Duplication Analysis

Test Code


CPT Codes*


ABN Required


Turnaround Time**

3 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.