This is the ValueSet that contains all the codes in eHDSI Laboratory Specimen Type (http://terminology.ehdsi.eu/ValueSet/eHDSILabSpecimenType) and eHDSI Laboratory Specimen Type (http://terminology.ehdsi.eu/ValueSet/eHDSILabSpecimenType). E.g. what you have to deal with if you get resources containing codes in either of them