description: Specifies the essential criteria for interpreting the results of a urine drug screening.
package_name: hl7.fhir.us.cdc-opioid-cpg
derivation: constraint
name: UrineDrugScreeningResultObservation
type: Observation
elements:
  subject:
    type: Reference
    refers: ['http://hl7.org/fhir/us/cdc-opioid-cpg/StructureDefinition/OpioidReviewUsefulPatient']
    index: 0
  effective:
    choices: [effectiveDateTime]
    index: 2
  effectiveDateTime: {type: dateTime, choiceOf: effective, index: 3}
  value:
    constraint:
      uds-value-string-invariant: {human: The value string SHALL contain a string representation of a positive or negative result., source: 'http://hl7.org/fhir/us/cdc-opioid-cpg/StructureDefinition/UrineDrugScreeningResultObservation', severity: error, expression: value.toString().lower().startsWith('pos') or value.toString().lower().startsWith('neg')}
    choices: [valueString]
    index: 5
  valueString:
    type: string
    constraint:
      uds-value-string-invariant: {human: The value string SHALL contain a string representation of a positive or negative result., source: 'http://hl7.org/fhir/us/cdc-opioid-cpg/StructureDefinition/UrineDrugScreeningResultObservation', severity: error, expression: value.toString().lower().startsWith('pos') or value.toString().lower().startsWith('neg')}
    choiceOf: value
    index: 6
package_version: 1.0.0-ballot
class: profile
kind: resource
url: http://hl7.org/fhir/us/cdc-opioid-cpg/StructureDefinition/UrineDrugScreeningResultObservation
base: http://hl7.org/fhir/us/qicore/StructureDefinition/qicore-observation-lab
version: 1.0.0-ballot
required: [effective, effectiveDateTime, value, valueString]