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What Every Law Enforcement Officer Should Know About DNA Evidence

First Responding Officers

Matching Profiles Using CODIS

COmbined DNA Index System (CODIS)
National Institute of Justice (NIJ) (see reuse policy).

If the DNA profile from a crime scene matches an offender's profile in CODIS, there are three possible outcomes:

  • The match may link two or more unsolved cases, which allows investigators to coordinate their activities.
  • The match may link a solved case with an unsolved case.
  • The match may link two or more solved cases, which would be useful information to prosecutors in the adjudication of each case.

Remember: One hit can link multiple investigations. For example, a single hit in Minnesota linked 16 crime scenes to one suspect.

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