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Appendix 4: Flowchart for Specimen Classification
Substance for classification
- Have any pathogens been neutralised or inactivated?
- Is it known NOT to contain infectious substances?
- Are all microorganisms present non-pathogenic for humans/animals?
- Is it a dried blood spot? Yes
- Is it an environmental sample, e.g. food and water that is not
considered to pose a significant health risk?
- Is it for transplant /transfusion?
No
Yes Yes Does it meet the definition of a
category A substance?
No
N
Is it a patient o
specimen for which
there is only a
minimal likelihood
that pathogens are
present?
UN 2814 Subject to
Infectious UN 3373 Not subject to
substance, Biological “Exempt the provisions
affecting humans; substance human (or of the DGR
OR UN 2900 Category B animal) unless meeting
specimen”
infectious provisions the criteria of
substance affecting another Class
animals (as or Division
appropriate)
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