| identifier | No | Identifier[] | External Identifier |
| accessionIdentifier | No | Identifier | Identifier assigned by the lab |
| status | No | code | available / unavailable / unsatisfactory / entered-in-error |
| type | No | CodeableConcept | Kind of material that forms the specimen |
| subject | No | Reference<Patient / Group / Device / Substance / Location> | Where the specimen came from. This may be from patient(s), from a location (e.g., the source of an environmental sample), or a sampling of a substance or a device |
| receivedTime | No | dateTime | The time when specimen was received for processing |
| parent | No | Reference<Specimen>[] | Specimen from which this specimen originated |
| request | No | Reference<ServiceRequest>[] | Why the specimen was collected |
| collection | No | SpecimenCollection | Collection details |
| - id | No | string | Unique id for inter-element referencing |
| - extension | No | Extension[] | Additional content defined by implementations |
| - modifierExtension | No | Extension[] | Extensions that cannot be ignored even if unrecognized |
| - collector | No | Reference<Practitioner / PractitionerRole> | Who collected the specimen |
| - collected[x] | No | dateTime, Period | Collection time |
| - duration | No | Duration | How long it took to collect specimen |
| - quantity | No | Quantity | The quantity of specimen collected |
| - method | No | CodeableConcept | Technique used to perform collection |
| - bodySite | No | CodeableConcept | Anatomical collection site |
| - fastingStatus[x] | No | CodeableConcept, Duration | Whether or how long patient abstained from food and/or drink |
| processing | No | SpecimenProcessing | Processing and processing step details |
| - id | No | string | Unique id for inter-element referencing |
| - extension | No | Extension[] | Additional content defined by implementations |
| - modifierExtension | No | Extension[] | Extensions that cannot be ignored even if unrecognized |
| - description | No | string | Textual description of procedure |
| - procedure | No | CodeableConcept | Indicates the treatment step applied to the specimen |
| - additive | No | Reference<Substance>[] | Material used in the processing step |
| - time[x] | No | dateTime, Period | Date and time of specimen processing |
| container | No | SpecimenContainer | Direct container of specimen (tube/slide, etc.) |
| - id | No | string | Unique id for inter-element referencing |
| - extension | No | Extension[] | Additional content defined by implementations |
| - modifierExtension | No | Extension[] | Extensions that cannot be ignored even if unrecognized |
| - identifier | No | Identifier[] | Id for the container |
| - description | No | string | Textual description of the container |
| - type | No | CodeableConcept | Kind of container directly associated with specimen |
| - capacity | No | Quantity | Container volume or size |
| - specimenQuantity | No | Quantity | Quantity of specimen within container |
| - additive[x] | No | CodeableConcept, Reference<Substance> | Additive associated with container |
| condition | No | CodeableConcept[] | State of the specimen |
| note | No | Annotation[] | Comments |
