Free tool · 2026 editions
Category A, Category B, or exempt?
The regulations do not give you a lookup table for this, and they are explicit about why. Assignment rests on the medical history of the source, the symptoms they presented and the endemic conditions where they were. This walks that cascade in order, and shows the clause behind every step.
Question 1
What is in the primary receptacle?
This is the highest-value question in the cascade, because the same named organism classifies differently depending on the form it is in. Roughly two thirds of the Category A list applies to cultures only.
ADR 2.2.62.1.5 · IATA DGR 3.6.2.2.3
An aid to a judgement, not the judgement
Classification is the shipper’s responsibility and cannot be delegated to a tool. IATA DGR 1.3 places identification, classification, packing, marking and documentation on the person who signs the declaration, and ADR 1.4.2.1 does the same for the consignor. This walks the cascade with you; the determination is still yours to make and to stand behind.
Clauses cited are from the 2026 editions of ADR and the IATA Dangerous Goods Regulations, and from the UN Model Regulations. The DGR is reissued annually and answers do change between editions, so check the edition your operation works to. National and operator variations can be stricter than either.
This covers the infectious hazard. It does not cover refrigerants, preservatives, genetic modification, endangered species, genetic resource access, human tissue consent, or export control, each of which can regulate a shipment independently of anything decided here.
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