Convicted offender profiles account for most entries in a state's DNA database. Every state in the has passed legislation regarding collection of DNA samples from convicted offenders.
Learn more about State DNA Statutes.
Forensic Profiles. The second most common entry in DNA databases is forensic profiles, developed from evidence in forensic cases. Significant numbers of forensic profiles entered by states into CODIS are probative profiles from cases where the perpetrator is not known, commonly referred to as unsolved cases. Additionally, states also enter forensic evidence profiles that match the reference profile of the suspect in that case (solved cases). Forensic profiles are entered into CODIS in the hope that a match will result from a search of the database, and an investigative lead generated.
Arrestee Profiles. A few states collect DNA samples from individuals arrested for certain offenses and maintain those DNA profiles in an arrestee database. In those states, specific laws require individuals arrested for qualifying offenses to provide a DNA sample for the database. States may upload these profiles to NDIS.
Note: Prior to a change in Federal law in 2006, arrestee samples were ineligible for NDIS upload.
Note: Prior to a change in Federal law in 2006, arrestee samples were ineligible for NDIS upload.
Suspect Profiles. Some states also maintain a suspect database, containing suspects' reference profiles lawfully collected in connection with criminal cases. These profiles are ineligible for upload into NDIS.
Unidentified Human Remains, Missing Person, and Relative of Missing Person Profiles. Some states also enter unidentified human remains, missing person, and/or relative of missing person profiles into CODIS. Often, these missing persons-related profiles include results from mtDNA analysis as well as STR profiles.
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