description: This profile defines how to represent Specimen Additive Substances in HL7 FHIR for the purpose of this guide. package_name: hl7.fhir.uv.lab-report.r4 derivation: constraint name: SpecimenAdditiveSubstance type: Substance elements: code: binding: {strength: preferred, valueSet: 'http://hl7.org/fhir/uv/lab-report/ValueSet/specimenAdditive-uv-lab'} index: 0 package_version: 1.0.0-ballot class: profile kind: resource url: http://hl7.org/fhir/uv/lab-report/StructureDefinition/Substance-additive-uv-lab base: http://hl7.org/fhir/StructureDefinition/Substance version: 1.0.0-ballot