207 Perry Parkway
MD 20877
GeneDx specializes in genetic testing for rare hereditary disorders. Our mission is to make clinical testing available to people with rare genetic conditions and their families.

Most of our tests include full gene analysis by DNA sequencing, the gold standard of genetic testing. We invite you to explore our site, where you will find comprehensive information and all of our paperwork. Please note that GeneDx does not provide Direct-to-Consumer testing. All tests must be ordered, and results sent to a health care provider, usually a physician or genetic counselor. Families are encouraged to present our material to their health care providers who can evaluate the appropriateness of testing.

For diagnostic testing in rare disorders, contact GeneDx. Where rare is common.

Phone:(301) 519-2100
Fax:(201) 421-2010

ClinVar URL:

Director:Sherri J Bale, PhD, FACMG

Director:Daniela Macaya, FACMG

Director:Jeanne Meck, PhD, FACMG

Director:Sharon F Suchy, PhD, FACMG

Director:Anne Maddalena, PhD, FACMG

Director:Gabriele Richard, MD, FACMG

Director:Kathleen Hruska, PhD, FACMG

Director:Dianalee A. McKnight, PhD, FACMG

Contact:Elizabeth Butler, MS, CGC

CLIA:21D0969951 (expires: 12/09/2018)
Other certification:CAP Accreditation
Last updated:April 4, 2017