Philosophy

     The DNA Diagnostic Laboratory is a non-profit, academic service lab established at Johns Hopkins in 1979.  We believe that when considering molecular genetic testing, the most important attribute of a clinical laboratory is commitment to diagnostic accuracy.  We fulfill this commitment through insistence on high quality data and comprehensive result interpretation. 
This site is intended for the use of health care providers.

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  • The AVAILABLE TESTS section of this site describes each specific test for genetic disorders available through the lab.
  • The SUBMISSION section walks you through how to submit a sample for testing, the billing policies and shipping instructions.
  • The FORMS section of this site contains all the necessary forms needed to accompany the sample in order to initiate testing.
  • The CONTACTS page provides phone and email contacts for laboratory staff.  
  • The ANNOUNCEMENTS section introduces and describes new tests and technologies available through our lab.
  • The LINKS section directs you to sites for additional clinical information.

Certification & Permits

CLIA Certification # 21D0692357    exp 8/7/09  (PDF File of CLIA Certificate)
MD State Permit   #557   exp 6/30/09    (PDF File of MD Certificate)
NY State Permit   #4253   exp 6/30/09  (PDF File of NY Certificate)
Joint Commission on Accreditation of Healthcare Organizations  Accredited: through 2009. 


Proficiency Testing: Participant in CAP Surveys, Inter- and Intra-laboratory comparison challenges.