http://hl7.org/fhir/us/core/StructureDefinition/us-core-specimen|8.0.0-ballot

The US Core Specimen Profile inherits from the FHIR [Specimen](https://hl7.org/fhir/R4/specimen.html) resource; refer to it for scope and usage definitions. This profile sets minimum expectations for the Specimen resource to record, search, and fetch information about substances associated with a patient being sampled or tested (such as nasopharyngeal swab, whole blood, or serum). It specifies which core elements, extensions, vocabularies, and value sets **SHALL** be present and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption.