Biological substances (Category B) · Royal Mail / Post Office
What is the item category for Biological substances (Category B) · Royal Mail / Post Office?
For Biological substances (Category B) · Royal Mail / Post Office, item category is Biological substances (Category B); carrier is Royal Mail / Post Office; restriction type is restricted; scope is UK only (international mail prohibited); conditions is Category B (UN3373) as classified in the latest edition of the Technical Instructions for Safe Transport of Dangerous Goods by Air published by the International Civil Aviation Organization (ICAO), may only be sent by, or at the specific request of, a qualified medical practitioner, registered dental practitioner, veterinary surgeon, registered nurse or a recognised laboratory or institution The total sample volume/mass in any parcel must not exceed 50ml/50g All biological substances must be posted in packaging that complies with Packaging Instruction 650, such as our Safebox product (note: frozen water and dry ice are prohibited) The sender's name and return address must be clearly visible on the outer packaging, recorded from its source on 2026-08-30.
Biological substances (Category B) (diagnostic specimens including urine, blood, faeces and animal remains) International – not allowed in the mail UK – allowed in the mail, with restrictions and packaging guidelines below: Category B (UN3373) as classified in the latest edition of the Technical Instructions for Safe Transport of Dangerous Goods by Air published by the International Civil Aviation Organization (ICAO), may only be sent by, or at the specific request of, a qualified medical practitioner, registered dental practitioner, veterinary surgeon, registered nurse or a recognised laboratory or institution The total sample volume/mass in any parcel must not exceed 50ml/50g All biological substances must be posted in packaging that complies with Packaging Instruction 650, such as our Safebox product (note: frozen water and dry ice are prohibited) The sender's name and return address must be clearly visible on the outer packaging
— postoffice.co.uk, retrieved 2026-08-30
- Item category
- Biological substances (Category B) verified
- Carrier
- Royal Mail / Post Office our reading
- Restriction type
- restricted our reading
- Scope
- UK only (international mail prohibited) our reading
- Conditions
- Category B (UN3373) as classified in the latest edition of the Technical Instructions for Safe Transport of Dangerous Goods by Air published by the International Civil Aviation Organization (ICAO), may only be sent by, or at the specific request of, a qualified medical practitioner, registered dental practitioner, veterinary surgeon, registered nurse or a recognised laboratory or institution The total sample volume/mass in any parcel must not exceed 50ml/50g All biological substances must be posted in packaging that complies with Packaging Instruction 650, such as our Safebox product (note: frozen water and dry ice are prohibited) The sender's name and return address must be clearly visible on the outer packaging verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- postoffice.co.ukhttps://www.postoffice.co.uk/mail/what-can-i-send