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Forensic Analysis Unit

Wisconsin DNA Databank

One of the main programs within the Serology/DNA section is the Wisconsin DNA Databank. Every person convicted of a felony is required by law to provide a DNA sample to the Databank. These samples are profiled and the profiles are stored in a computer. DNA profiles obtained from evidence taken during the investigation of crimes with completely unknown suspects are also stored in the Databank.

The profiles for known offenders are searched against the casework profiles in an attempt to develop a suspect. This gives law enforcement a powerful tool to potentially solve cases which cannot be solved in any other way. The Wisconsin databank is linked nationally through the CODIS network. This allows Wisconsin cases to be searched against other states' samples, and vice-versa.

In addition to potentially solving cases, the Databank may be able to associate serial cases which have not previously been identified as having involved the same suspect. This is achieved by comparing each casework profile to all the other casework profiles.

DNA Collection Information and Resources

DOJ Letter to Sheriffs and Jail Administrators

DOC Letter to Sheriffs

Obligated Offenders Required to Submit DNA Specimens to the Databank

The DNA Collection Statute: What It Means for Law Enforcement

DNA Jail Model Policy

DNA Collection and Submission Textbook

DNA Collection Poster

Related Resources

Convicted Offenders' Obligation to Submit a DNA Specimen

Report and Recommendations of the DNA Task Force

CIB Identification Newsletter, November 2010

CIB Identification Manual

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