STK11 Gene Sequencing & Del/Dup

New York




  • Peutz-Jeghers Syndrome

Clinical Utility

  • An individual with two or more of the following features:
    • Two or more Peutz-Jeghers-type hamartomatous polyps of the small intestine
    • Mucocutaneous hyperpigmentation of the mouth, lips, nose, eyes, genitalia, or fingers
    • Family history of PJS
    • An unaffected individual with a family history suggestive of PJS (see above) when an affected individual is unavailable for his or her own genetic testing.

Lab Method

  • Capillary Sequencing
  • MLPA

Test Code


CPT Codes*

81404x1, 81405x1

ABN Required


Turnaround Time**

3 weeks

Preferred Specimen

2-5 mL Blood - Lavender Top Tube

Alternative Specimen

Buccal Swabs | Fibroblasts (separate charge for cell culture may apply)

*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.

**Turnaround times are estimates and begin once the sample(s) begin processing at the GeneDx lab and could be extended in situations outside GeneDx’s control.