- On television DNA results are available to the detective in a matter of minutes. Is that realistic?
- No, for a number of reasons. Evidence cannot be removed from a crime scene as soon as it is discovered, as depicted on TV. Evidence must first be documented, both photographically and in notes, prior to being properly collected. Once it is collected it must be inventoried and a chain of custody established to document everyone who has access to the evidence from the time it is collected until it is properly disposed of after any necessary court proceedings. Once the chain of custody is established the evidence can be released to a DNA technician for analysis.