http://hl7.org/fhir/StructureDefinition/specimen-isDryWeight|5.2.0

If the recorded quantity of the specimen is reported as a weight, if it is a dry weight.
NameFlagsCardTypeDescription & Constraints
Extension
0..1Whether quantity is a dry weight
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueBoolean *
1..?boolean