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Laboratory of Criminalistics

The Santa Clara County District Attorney’s Crime Laboratory is a nationally accredited forensic laboratory servicing all criminal justice agencies in Santa Clara County. Our examiners evaluate and analyze evidence, interpret results, provide expert testimony related to the full spectrum of physical evidence recovered from crime scenes, and offer technical assistance and training to all user agencies. Service is provided in the major analytical disciplines of controlled substance analysis, firearms/tool marks, forensic biology (DNA), forensic toxicology, latent print processing, questioned documents, trace evidence and computer crimes. The lab employs over 50 criminalists, technicians and support staff, and analyzes thousands of evidence items each year.
The crime laboratory is accredited by the American Society of Crime Laboratory Directors Laboratory / Accreditation Board. The accreditation is in the disciplines of DNA, firearms/toolmarks, trace evidence, questioned documents, controlled substances, and toxicology.


The Santa Clara County District Attorney's Office Laboratory of Criminalistics currently provided public crime lab "virtual tours" each month.  These "virtual tours" actually consist of 1.5-hour of presentations about the forensic work performed in the Laboratory.  This presentation "virtually walks through" all the different areas of the crime lab via photographs and stories.  However, it does not include actually touring the facility itself due to the sensitivity of our work and the potential for contamination.  These presentations are free and open to the public.  We began providing these education tours in September of 2009.

Anyone interested in attending a presentation or organizing a group to attend should contact Criminalist Cordelia Willis at with the subject: Crime lab tour.

For More Information Please Contact:
Laboratory of Criminalistics
250 West Hedding Street
San Jose, CA 95110
Phone: (408) 808-5900
Fax: (408) 275-8245