description: This extension links this observation with the laboratory test kit used for this test.\n Usually only one laboratory test kit is referred package_name: hl7.fhir.uv.lab derivation: constraint name: DeviceLabTestKit type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/lab-report/StructureDefinition/observation-deviceLabTestKit'} index: 1 value: choices: [valueReference] index: 3 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/Device'] index: 4 package_version: report-1.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/uv/lab-report/StructureDefinition/observation-deviceLabTestKit base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-ballot