Specimen resource (FHIR R4)

Specimen is the FHIR R4 resource for a sample to be used for analysis.

Resource	Specimen
FHIR version	R4 (4.0.1)
Canonical URL	http://hl7.org/fhir/StructureDefinition/Specimen
Required elements	none; every top-level element is optional (min 0) in base R4
IG profiles in this catalog	1

Example

{
  "resourceType": "Specimen",
  "id": "specimen-1189df4363a6761f0eccd1eb5cf748d6",
  "status": "available",
  "type": {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v2-0487",
        "code": "UR",
        "display": "Urine"
      }
    ]
  },
  "subject": {
    "reference": "Patient/patient-L46A6EIB9J"
  },
  "receivedTime": "2026-07-01T12:00:00Z",
  "collection": {
    "collectedDateTime": "2026-06-29T13:00:00Z",
    "collector": {
      "display": "Phlebotomy Team"
    }
  }
}

Generated by the Pidgeon engine: pidgeon generate Specimen --seed 20260722.

Validation context

strict pidgeon validate grades a Specimen instance against the base R4 structure definition: missing required elements raise REQUIRED_FIELD_MISSING and cardinality violations raise CARDINALITY_MIN or CARDINALITY_MAX.(REQUIRED_FIELD_MISSING)
strict Profile validation grades the same instance against an installed IG profile: profile cardinality findings carry FHIR-PROFILE-CARDINALITY and terminology binding findings carry FHIR-PROFILE-BINDING.(FHIR-PROFILE-CARDINALITY)

This answer, in your terminal

pidgeon lookup Specimen

Wire it into your AI agent:

claude mcp add pidgeon -- npx -y @pidgeonhealth/mcp

Download Post free to browse this reference with generation attached.