<status value="draft" /> <experimental value="false" /> <date value="2026-02-26" /> <publisher value="NHS Wales" /> <copyright value="2026 NHS Wales." /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="Specimen" /> <baseDefinition value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Specimen" /> <derivation value="constraint" /> <differential> <element id="Specimen.identifier"> <path value="Specimen.identifier" /> <mustSupport value="true" /> </element> <element id="Specimen.type"> <path value="Specimen.type" /> <min value="1" /> </element> <element id="Specimen.subject"> <path value="Specimen.subject" /> <min value="1" /> <type> <code value="Reference" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Group" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Substance" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Patient" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Location" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Device" /> </type> </element> <element id="Specimen.parent"> <path value="Specimen.parent" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Specimen" /> </type> </element> <element id="Specimen.request"> <path value="Specimen.request" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-ServiceRequest" /> </type> <mustSupport value="true" /> </element> <element id="Specimen.collection.collector"> <path value="Specimen.collection.collector" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Practitioner" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-PractitionerRole" /> </type> </element> <element id="Specimen.collection.collected[x]"> <path value="Specimen.collection.collected[x]" /> <min value="1" /> <type> <code value="dateTime" /> </type> <mustSupport value="true" /> </element> <element id="Specimen.container"> <path value="Specimen.container" /> <mustSupport value="true" /> </element> <element id="Specimen.note.author[x]"> <path value="Specimen.note.author[x]" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Practitioner" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Patient" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-RelatedPerson" /> <targetProfile value="https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Organization" /> </type> <type> <code value="string" /> </type> </element> </differential> </StructureDefinition>