If you need to collect clothing evidence from a crime scene, what is the recommended way to do it?

When collecting clothing evidence from a crime scene, folding the clothing neatly and placing it in a paper bag or envelope is the recommended method for several reasons. First, paper is breathable and helps to prevent the accumulation of moisture, which can lead to the degradation of biological evidence, such as DNA, that may be present on the clothing. Plastic bags can trap moisture and create a hostile environment for fragile traces of evidence.

Additionally, using a paper bag helps to protect the integrity of the evidence during transport and storage. It minimizes the risk of contamination or damage, ensuring that the evidence remains viable for analysis. Proper packaging also aids in documentation and chain of custody, which are critical in maintaining the validity of the evidence in court.

Other methods, such as using a plastic bag or ziploc bag, can create issues with condensation and moisture. Collecting everything haphazardly in a trash bag does not provide the necessary care for the evidence and can lead to loss or contamination. Leaving the clothing out in the open air poses risks of contamination and degradation by environmental factors and should always be avoided.