- Associació Catalana de Ciències de Laboratori Clínic (ACCLC)
http://www.acclc.cat/ca - Biocat
http://www.biocat.cat/en - Clinical and Laboratory Standards Institute (CLSI)
http://www.clsi.org - European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)
http://eflm.eu - Entidad Nacional de Acreditación (ENAC)
https://www.enac.es/web/english - IFCC-DGKL-RELA, external quality assessment program for refference laboratories with results of several years programs.
http://www.dgkl-rfb.de:81 - International Federation of Clinical Chemistry and Laboratory Medicine (IFCC)
http://www.ifcc.org - Joint Research Centre (JRC)
https://ec.europa.eu/jrc/en/reference-materials - International Organization for Standardization (ISO)
http://www.iso.org - Joint Committee for Traceability in Laboratory Medicine (JCTLM), database with refference mesurement method, refference materials and refference laboratories.
http://www.bipm.org/jctlm - Secció Catalana de Metrologia
http://www.scmetro-sct.cat - UAB Scientific-technical services
https://www.uab.cat/web/research/itineraries/innovation-and-knowledge-transfer/scientific-technical-services/scientific-and-technical-services–1345667278676.html - Sociedad Española de Medicina de Laboratorio (SEQC)
https://www.seqcinternational.com/