What is meant by "swipe or smear" in blood analysis?

What is meant by "swipe or smear" in blood analysis?

• A. A transfer of blood that contaminates a clean surface
• B. A movement through an existing blood stain
• C. A drop of blood falling to the ground
• D. A pattern formed during a violent incident

Answer: (A)

The term "swipe or smear" in blood analysis refers specifically to the transfer of blood onto a surface, which may inadvertently contaminate what was previously a clean surface. When blood is smeared, it typically occurs when an object or body part comes into direct contact with a blood stain, leading to a dispersal of the blood onto another area. This can be crucial evidence in a forensic investigation as it can show the movement of a suspect or victim, or the interaction at a crime scene. Recognizing this type of evidence helps investigators understand the dynamics of how blood was transferred during the incident, potentially offering insights into the sequence of events.

The term "swipe or smear" in blood analysis refers specifically to the transfer of blood onto a surface, which may inadvertently contaminate what was previously a clean surface. When blood is smeared, it typically occurs when an object or body part comes into direct contact with a blood stain, leading to a dispersal of the blood onto another area. This can be crucial evidence in a forensic investigation as it can show the movement of a suspect or victim, or the interaction at a crime scene. Recognizing this type of evidence helps investigators understand the dynamics of how blood was transferred during the incident, potentially offering insights into the sequence of events.