description: This profile of the Ratio data type constraints the Ratio (Eu Lab) profile defining a core value set for UCUM. The Ratio (Eu Lab) imposes the usage of the UCUM as the code system for units and allows expressing uncertainty of measurement. package_name: myhealth.eu.fhir.laboratory derivation: constraint name: RatioMyHealthEu type: Ratio elements: numerator: {type: Quantity, index: 0} denominator: {type: Quantity, index: 1} package_version: 0.1.0 class: complex-type kind: complex-type url: http://fhir.ehdsi.eu/laboratory/StructureDefinition/Ratio-lab-myhealtheu base: http://hl7.eu/fhir/laboratory/StructureDefinition/Ratio-eu-lab version: 0.1.0