Mesa Police Department Forensic Services

Biology Unit

Forensic Scientists (I, II, & III) assigned to the Biology Unit examine evidence for the presence of biological substances and analyze samples to obtain a DNA profile.  The Biology Unit compares known profiles from victims and/or suspects to evidentiary sample profiles for inclusion or exclusion in a case.  The profiles are then entered into the Combined DNA Index System (CODIS).  CODIS compares evidence from one crime scene to another as well as arrestee and convicted offender profiles nationwide.  The Biology unit also conducts bloodstain pattern analysis in the lab and at crime scenes.  Members of this unit provide expert witness testimony in court regarding their findings in the areas of Serology (body fluid identification), DNA, and Bloodstain Pattern Analysis.

Home