En medlemsstat kan udpege et laboratorium beliggende i en anden medlemsstat eller i en stat, der er medlem af Den Europæiske Frihandelssammenslutning (EFTA), og et laboratorium kan være nationalt referencelaboratorium for mere end en medlemsstat.
A Member State may designate a laboratory situated in another Member State or European Free Trade Association (EFTA) Member and a single laboratory may be the national reference laboratory for more than one Member State.