When recovering biological evidence from a crime
scene it must be handled with extreme caution, as it is highly perishable. This
article discusses the recovery of hair and semen from bedding and clothing left
at the scene after a sexual assault. After an initial search of the scene—done
to locate the evidence—the evidence should be well photographed and videotaped.
Also, it should be noted that investigators must wear protective clothing—at
all times, no matter what evidence is being collected—changing them every time
new evidence is collected, as well as using tools, such as tweezers and so on.
