If you are listening to a scanner and hear the terms "universal precautions" it usually means that the person or persons present on scene have a contagious disease. Usually it is meant to give a warning to first responders that "AIDS" is present and means that gloves and masks are a good idea. This became necessary when people with aids didn't want it known they had aids but it was still necessary to alert people who had to interact with them because that's what they're being paid to do.
The precautions need to be used at crime scenes where bodily fluids may be present and you don't know what they may contain. Almost all agencies are now mandated to provide training about blood borne pathogens and hazardous materials.
Contamination of evidence means that something was introduced to the evidence after the crime occurred and by someone not involved. It could also be tampering by a perpetrator.
Cross contamination is something like a blood stain sample being put together with a second blood stain sample and they rub together and mix. They could have been from two different people. All evidence suspected of having trace evidence potential need to be packaged separately.
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If you are listening to a scanner and hear the terms "universal precautions" it usually means that the person or persons present on scene have a contagious disease. Usually it is meant to give a warning to first responders that "AIDS" is present and means that gloves and masks are a good idea. This became necessary when people with aids didn't want it known they had aids but it was still necessary to alert people who had to interact with them because that's what they're being paid to do.
The precautions need to be used at crime scenes where bodily fluids may be present and you don't know what they may contain. Almost all agencies are now mandated to provide training about blood borne pathogens and hazardous materials.
Contamination of evidence means that something was introduced to the evidence after the crime occurred and by someone not involved. It could also be tampering by a perpetrator.
Cross contamination is something like a blood stain sample being put together with a second blood stain sample and they rub together and mix. They could have been from two different people. All evidence suspected of having trace evidence potential need to be packaged separately.
Always wear rubber gloves.