What is an essential action to take while handling evidence?

Wearing gloves at all times while handling evidence is vital for multiple reasons. Firstly, gloves protect the integrity of the evidence by preventing contamination from the investigator's skin, which may carry oils, dirt, or other substances that could alter or compromise the evidence. It ensures that the evidence will be admissible in court, as juries and judges require confidence that what is presented has not been altered or tampered with in any way.

Additionally, wearing gloves helps protect the investigator from potential hazards, such as biohazardous materials or chemicals that can be present at a crime scene. This safety measure is part of standard operating procedures in law enforcement and forensic practices, emphasizing the importance of preserving the original condition of evidence while ensuring the safety of the officer involved.

Labeling evidence at the scene is also important but comes after the proper handling and protection of the evidence has been ensured. Using tools like needlenose pliers might be necessary in certain situations, yet they are not a fundamental action needed across all evidence retrieval scenarios, making it a less essential choice. Leaving items unsealed would compromise evidence integrity, as it could lead to contamination or degradation of the evidence over time.