<status value="active" /> <date value="2023-04-28" /> <publisher value="HL7 UK" /> <contact> <name value="HL7 UK" /> <telecom> <system value="email" /> <value value="ukcore@hl7.org.uk" /> <use value="work" /> <rank value="1" /> </telecom> </contact> <description value="This derived profile represents an individual Laboratory test and result value. These tests can be grouped together using the Observation-Group Profile." /> <purpose value="To provide the minimum expectations for each individual Laboratory test." /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="Observation" /> <baseDefinition value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation" /> <derivation value="constraint" /> <differential> <element id="Observation"> <path value="Observation" /> <constraint> <key value="ukcore-obs-lab-001" /> <severity value="warning" /> <human value="Either value, dataAbsentReason or note SHOULD be populated" /> <expression value="value.exists() or dataAbsentReason.exists() or note.exists()" /> </constraint> </element> <element id="Observation.category"> <path value="Observation.category" /> <slicing> <discriminator> <type value="value" /> <path value="coding.code" /> </discriminator> <rules value="open" /> </slicing> <min value="1" /> </element> <element id="Observation.category:sliceLaboratory"> <path value="Observation.category" /> <sliceName value="sliceLaboratory" /> <min value="1" /> <max value="1" /> </element> <element id="Observation.category:sliceLaboratory.coding.system"> <path value="Observation.category.coding.system" /> <fixedUri value="http://terminology.hl7.org/CodeSystem/observation-category" /> </element> <element id="Observation.category:sliceLaboratory.coding.code"> <path value="Observation.category.coding.code" /> <fixedCode value="laboratory" /> </element> <element id="Observation.code"> <path value="Observation.code" /> <binding> <strength value="preferred" /> <description value="A code from the SNOMED Clinical Terminology UK coding system regrading laboratory medicine test requests and results" /> <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-UnifiedTestList" /> </binding> </element> <element id="Observation.subject"> <path value="Observation.subject" /> <type> <code value="Reference" /> <targetProfile value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Patient" /> </type> </element> </differential> </StructureDefinition>