Blood Examination

When adequate known blood from victim and/or suspect is submitted and reasonable justification accompanies the service request, evidence will be examined to:

• Locate bloodstain(s)
• Identify blood by chemical testing
• Determine if of human origin (this is not done if sample is to be DNA tested)
• Perform DNA testing

Bloodstains from a victim’s clothing or from under the body will not be profiled when there is no question as to the blood’s source. This request deviates from the basic premise of establishing a transfer between the victim, suspect, object, or location. For the same reason, multiple bloodstains collected from a crime scene will not be classified unless there is justifiable reason to expect that the suspect is bleeding. The fewest possible number of samples will be examined to answer the question at hand. Weapons removed from a wound by medical or autopsy personnel will not be routinely examined for blood.