New WHO ACPA standard enables standardisation among anti-CCP2 assays, but not other ACPA assays using different antigens.
Lieve VAN HoovelsLiesbeth E Bakker-JongesDina VaraCaroline BijnensLucy StudholmeDaniela SieghartBert Vander CruyssenPatrick VerschuerenGuenter SteinerJan G M C DamoiseauxXavier BossuytPublished in: Annals of the rheumatic diseases (2024)