Maryland’s DNA database, housed at the State Police Forensic Sciences Division laboratory, has now recorded 10,000 positive comparisons, or “hits,” as they are commonly referred to. A positive comparison occurs when DNA obtained from a crime victim or scene is matched with either DNA from a known offender sample or DNA from another crime scene. Matches occur using CODIS, the Combined DNA Index System, which enables access to both the Maryland DNA database and the National DNA database.
Last month, scientists at the Maryland State Police Forensic Sciences Division forwarded information to investigators with Homeland Security Investigations and the Prince George’s County Police Department that the 10,000th positive DNA comparison through the use of Maryland’s DNA database was connected to an open 2020 drug case they are investigating.