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Prenatal Myotonic Dystrophy 1

New York




  • Dystrophia Myotonica
  • Myotonia Atrophica
  • Myotonic Dystrophy
  • Steinert Disease

Clinical Utility

  • Molecular confirmation of a clinical diagnosis

Lab Method

  • PCR Fragment Analysis

Test Code


CPT Codes*


ABN Required


Turnaround Time**

2 weeks

Preferred Specimen

20 mL Amniotic Fluid | 2 T25 flasks of cultured amniocytes | 20 mg CVS | 2 T25 flasks of cultured chorionic villi | Direct or Cultured POC

Alternative Specimen

3 ug Extracted DNA

*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.