However, in resting horses, a heart rate over 80 can be a sign of a serious problem. If a calm horse has a pulse that is consistently over 60, it can also be a problem. Things that can increase the horse's heart rate include exercise, fear, pain, stress, and excitement.
Because blood analysis is a comparison analysis (comparison of the victim's blood and the suspect's blood to blood found at the crime scene), reference blood samples are needed from the victim and suspect. A comparison must be made between the genetic markers in the victim s blood and the suspect's blood.
Forensic science is not only used to identify people, but also to locate or recreate a crime scene. Chemicals such as Luminol and Hemident have been developed to identify blood in a crime scene, even if it has been cleaned. Once the blood is located, blood spatter analysis can be conducted to recreate the scene.