Source:http://linkedlifedata.com/resource/umls/id/C1700255
HL7V3.0: <p><b>Description:</b>A specimen is defined as a physical entity that is an individual, a group, an item, or a part representative of a larger group, class or whole that is the target of an observation or analysis for the purpose of drawing conclusions about the group, class, or whole. This can be used to code a component of the specimen that the observation diagnosis relates to. Note that any physical entity in the universe has the potential to become a specimen.</p><p><b>Examples:</b></p><ul><li><p>Blood</p></li><li><p>Water</p></li><li><p>Animal cadaver</p></li></ul>