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Johns Hopkins Genomics – DNA Diagnostic Laboratory


A big welcome to Sumathi Rachamadugu MSc, MS, CGC!! She joined the DDL team as a new Genetic Counselor at the end of 2021. Please see her biography here: Lab Staff | DNA Diagnostic Lab



Please ship all samples to:

Johns Hopkins Genomics - DNA Diagnostic Lab
1812 Ashland Ave
Sample Intake; Room 245

Baltimore, MD 21205

When considering molecular genetic testing, there is nothing more important than the clinical laboratory’s commitment to diagnostic accuracy.  At the Johns Hopkins DNA Diagnostic Laboratory – a non-profit, academic service lab established in 1979 – we fulfill this commitment through insistence on high quality data and comprehensive result interpretation. The highest of standards, where modern medicine was pioneered – that’s what the world has come to expect from Johns Hopkins.