Royal Mail requirements
Royal Mail will only carry UN3373 Diagnostic Specimens if they are packed
following Packaging Instruction P650, and:
• Are sent by first class post or Special Delivery and to inland addresses only
• The packet is marked with the sender’s name, telephone number and address
TNT (Courier) requirements
• The “Nature and Quantity of Goods” box must contain the text “Biological
• Substance, Category B” and “UN3373” on the Consignment note/Air Waybill.
• The Dangerous Goods “YES” box must be ticked.
• The name and telephone number of a “responsible person” must be written on the consignment note or on the package.
• The package must carry the warning symbol bearing the text UN3373, and the
words “Biological Substance, Category B”.