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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?   Yes
                             Is it a dried  bloodspot?

                             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              Does it meet the definition of a

                                           category A substance?

                                                             No


                                                 Is it a patient
                                                 specimen for which
                                                 there is only a
                                                 minimal likelihood
                                                 that pathogens are
                                                 present?






                  UN 2814                   UN 3373
                  Infectious                Biological           Subject to            Not subject to
                  substance,                substance            “Exempt               the provisions
                  affecting humans;         Category B           human (or             of the DGR
                  OR UN 2900                                     animal)               unless meeting
                  infectious substance                                                 the criteria of
                  affecting animals (as                                                another Class
                  appropriate)                                                         or Division
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