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Chapter 2 |
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Buccal swab A swab of the inner portion of the cheek; cheek cells are usually collected to determine the DNA profile of an individual.
Chain of custody A list of all people who came into possession of an item of evidence.
Finished sketch A precise rendering of the crime scene, usually drawn to scale.
Physical evidence Any object that can establish that a crime has been committed or can link a crime and its victim or its perpetrator.
Rough sketch A draft representation of all essential information and measurements at a crime scene. This sketch is drawn at the crime scene.
Standard/reference sample Physical evidence whose origin is known, such as blood or hair from a suspect, that can be compared to crime-scene evidence.
Substrate control Uncontaminated surface material close to an area where physical evidence has been deposited. This sample is to be used to ensure that the surface on which a sample has been deposited does not interfere with laboratory tests.
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