Which label is essential on clothing that has body fluids?

The essential label on clothing that has body fluids is the biohazard sticker. This label is crucial because it clearly indicates that the item poses a risk of exposure to pathogens or infectious materials, which is a significant concern in law enforcement and forensic investigations. Items contaminated with body fluids can carry diseases, and the biohazard symbol alerts anyone handling the clothing of the potential dangers, ensuring proper precautions are taken during storage, handling, and transport.

While other labels, such as the victim's name or the time it was packaged, may provide important contextual information, they do not convey the same level of health risk awareness as the biohazard sticker. An officer’s signature, although important for chain-of-custody documentation, does not serve the immediate purpose of warning about hazardous content. Therefore, the presence of the biohazard sticker is critical for safety and compliance with health regulations.