Which of the following items should be labeled as biohazards?

• A. Hypodermic Needles
• B. Bloodstained Clothing
• C. Gunshot Residue
• D. A and B

Answer: (D)

Labeling items as biohazards focuses on materials that may carry infectious agents and require special handling. Hypodermic needles can be contaminated with blood or other potentially infectious materials and pose a risk of exposure through puncture; they must be treated as biohazards, disposed of in sharps containers, and labeled accordingly. Bloodstained clothing may contain blood or body fluids and thus can harbor pathogens; it should be treated as biohazardous waste and handled with appropriate PPE and disposed of in biohazard bags or properly decontaminated. Gunshot residue is primarily a chemical/particle residue, not a biological hazard, so it isn’t labeled as a biohazard. Therefore, the items that should be labeled as biohazards are hypodermic needles and bloodstained clothing.