Which TB Sputum label is specifically used for Biological Substance, Category B?

• A. To & From Label
• B. UN 3373 Label
• C. Name and # of person responsible for shipment label
• D. UN 3373 Biological Substance, Category B label

Answer: (D)

For Biological Substances, Category B shipments, the label must clearly identify both the UN number and the proper shipping name with the category. The correct label reads UN 3373 Biological Substance, Category B. That wording explicitly communicates that the material is a biological substance and that it falls under Category B, not Category A, which governs more dangerous infectious substances. The TB sputum sample is a potential infectious substance, so this category applies and the label must state both the UN number and the category name.

The other options don’t provide the full, explicit designation needed. A To & From label is just shipping information, not a hazard indication. A generic UN 3373 label may appear incomplete without the exact description “Biological Substance, Category B.” A label naming the person responsible for shipment is not a hazard label at all.