Which type of evidence requires special handling to ensure it is not contaminated?

Wet evidence refers to items that are wet due to biological or other fluid substances, such as blood, bodily fluids, or other liquids. This type of evidence requires special handling to prevent contamination and degradation. For instance, wet evidence can harbor biological materials that may contain DNA, and improper handling can lead to the loss of this crucial information or the introduction of unwanted contaminants. Additionally, wet evidence may need to be dried properly before it can be stored or analyzed to preserve its integrity.

In contrast, while digital evidence also requires careful handling to maintain its integrity, it is not classified specifically as wet. Similarly, trace evidence, which includes tiny materials like hair or fibers, must be handled meticulously but is distinct from the concerns associated with wet evidence. Physical evidence encompasses a broader category and does not specifically convey the unique requirements of wet evidence. Thus, the importance of properly managing wet evidence stands out due to the significant risk of contamination that can compromise ongoing investigations and related judicial processes.