This is the ValueSet that contains all the codes in SpecimenAdditiveEntity (https://smt.esante.gouv.fr/fhir/ValueSet/jdv-hl7-v3-SpecimenAdditiveEntity-cisis) and SpecimenAdditiveEntity (https://smt.esante.gouv.fr/fhir/ValueSet/jdv-hl7-v3-SpecimenAdditiveEntity-cisis). E.g. what you have to deal with if you get resources containing codes in either of them