Law enforcement can collect DNA from a discarded personal item (for example, a cup) used by a person and submit that DNA for laboratory testing to generate a usable DNA profile.
October 17, 2025
high
procedural
A non-invasive method for obtaining a person's DNA for comparison without requiring a direct biological sample from the person.
A DNA profile obtained from a discarded personal item can be compared to preserved crime-scene DNA evidence and, if there is a match, can link the person who used the item to the earlier crime scene.
October 17, 2025
high
forensic
Matching newly obtained DNA profiles to historical evidence is a method used to investigate and resolve cold cases.
Forensic laboratories commonly perform DNA testing and fingerprint analysis on items recovered from crime scenes.
high
procedural
Describes routine crime-lab analytic procedures used during criminal investigations.