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Blood Stain Pattern Interpretation

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All members of the Biology Unit are trained and proficiency tested in Blood Stain Pattern Interpretation and are available for crime scene call out. If blood flows during a violent crime, distinctive patterns may result that can provide investigative information about the activities which occurred during the commission of the crime. Theses distinctive patterns occur because of the physical properties of blood and how it reacts when acted upon by physical forces. Blood stain pattern interpretation can be used to determine what caused the patterns left behind, to support or refute a claim of events, and to help describe the events that occurred.

Information that can be obtained:

  • Direction of travel of blood.
  • Level of force used to put the blood into flight.
  • Location of the blood source which was acted upon to create the pattern.
  • Movements during bloodshed.
  • Movements after bloodshed.