How should samples be collected and packaged for submission to the Forensic Biology Unit?

Samples should be collected in a way that will avoid sample destruction and degradation.  Biological evidence is best preserved in a dry, cool environment.  Items of evidence should be packaged in brown paper sacks, evidence envelopes, or similar paper packaging material.  Biological evidence should never be packaged in plastic bags. Please reference “Evidence Packaging and Submittal Tips” and information located under the Evidence Submission tab at Quality System Overview | Oklahoma State Bureau of Investigation for additional guidance.