http://hl7.org/fhir/StructureDefinition/specimen-isDryWeight|4.0.1

If the recorded quantity of the specimen is reported as a weight, if it is a dry weight.

element_id	types
Extension
Extension.extension
Extension.url
Extension.value[x]	boolean
Extension
Extension.id	http://hl7.org/fhirpath/System.String
Extension.extension	Extension
Extension.url	http://hl7.org/fhirpath/System.String
Extension.value[x]	boolean