What is the proper method for storing evidence such as a piece of clothing that has blood on it and is still damp?

The proper method for storing evidence like clothing with blood that is still damp is to use a paper bag. This is because paper allows the fabric to breathe, which is essential when dealing with moist or damp materials. Storing damp items in airtight containers or plastic could trap moisture and create a breeding ground for mold and bacteria, which can degrade the evidence over time.

Using a clear plastic bag would also keep moisture in, leading to similar potential issues. Glass containers are typically not ideal for items that may be damp, as they can shatter and are heavier to transport. Paper bags, on the other hand, provide adequate protection while allowing any residual moisture to evaporate, preserving the integrity of the evidence for forensic analysis and further investigation.