County and state laws strictly regulate the packaging and disposal of biological waste generated by research and patient care. Disposal procedures depend on whether the waste is classified as biohazardous or medical waste.

Biohazardous waste, also called infectious waste (such as blood, body fluids, and human cell lines), is waste contaminated with potentially infectious agents or other materials that are deemed a threat to public health or the environment.

Medical waste is waste generated in labs or clinical settings that is not contaminated, but could appear hazardous to outsiders.

Contamination determines the difference in disposal method:

• Contaminated biohazard waste must be collected by a licensed biohazardous waste hauler.
• Decontaminated biohazardous waste can be disposed of as medical waste.

For detailed disposal instructions, read How to Package and Dispose of Biohazardous and Medical Waste.

Biohazardous waste includes the following categories:

• Sharps, including but not limited to hypodermic needles, blades, and slides. For more information on recognizing sharps, read Sharps Overview.
• Dry biohazardous waste
• Contaminated cultures, petri dishes, and other culture flasks
• Infectious agents
• Wastes from bacteria, viruses, spores, or live and attenuated vaccines
• Waste contaminated with excretion, exudates, or secretations from infectious humans or animals
• Paper towels, Kim wipes, bench paper, or any other items contaminated with biohazard materials
• Liquid biohazardous waste
• Human or animal blood
• Human or animal blood elements
• Human or animal bodily fluids or semi-liquid materials
• Human anatomical specimens
• Animal carcasses and body parts

Medical waste includes the following:

• Noncontaminated paper towels, wipes, and gloves
• Noncontaminated cultures, petri dishes, and other culture flasks
• Noncontaminated syringes (no needles!)
• Decontaminated (i.e., autoclaved) dry biohazard waste
• Empty specimen containers
• Bandages or dressing containing dry blood or body fluids
• Trace chemotherapy waste, including empty containers and IV tubing
• Any material resulting from medical care that is not biohazardous
• Any equipment used in a biomedical lab that could appear hazardous

If you are a UCSD employee with questions, contact EH&S Biosafety, (858) 534-5366.