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Laboratory staff examine questioned materials and compare them with known standards. Some examples include examining DNA, fingerprints, bullets, or fibers from a crime scene, or identifying a drug or blood alcohol level. Results might confirm information already gathered or change the focus an investigation to a different direction.
Governmental officials authorized to request field assistance:
|Sheriff||Chief of Police||Coroner||Attorney General|
|Medical Examiner||Governor||District Attorney||Head of any State Agency|
Who can request lab services?
The crime laboratory participates in a criminal investigation only at the request of authorized governmental officials (see table above). Services are also available to the defendant in a felony action upon his or her request and with the approval of the presiding judge (Wis. Stat. §165.79(1)). Laboratories may decline any matter not involving a potential felony charge.
The laboratories do not accept cases from the general public nor do they participate in civil cases except as provided by law.
Where can I get more information about how evidence is analyzed?
More detail about the kinds of work performed by the laboratories is available here.