Colorado POST Practice Exam

How should evidence like a bloody scarf and a tire iron be marked?

1. In a plastic bag for preservation

2. In a paper bag for airflow and drying

3. Using permanent markers directly on the items

4. In a sealed box to avoid contamination

The correct answer is: In a paper bag for airflow and drying

Marking evidence, such as a bloody scarf and a tire iron, in a paper bag for airflow and drying is the correct approach, as it allows for proper ventilation and reduces the risk of mold or degradation of the evidence. Blood and other biological materials can retain moisture, which can lead to the growth of bacteria or fungi if not adequately dried. A paper bag permits the moisture to escape, thereby preserving the integrity of the evidence. Preserving evidence in a plastic bag could create a moist environment, which is not ideal for items that could potentially harbor biological material. While sealing items in a box can help avoid contamination, it may not provide the necessary airflow that certain types of evidence require. Using permanent markers directly on the items can damage the evidence and is generally not recommended, as it may taint the evidence or alter its condition. Thus, using a paper bag strikes an optimal balance between protection and preservation.