Harmonization of antineutrophil cytoplasmic antibodies (ANCA) testing by reporting test result-specific likelihood ratios: position paper

Xavier Bossuyt*, Jan Damoiseaux, Niels Rasmussen, Pieter van Paassen, Bernard Hellmich, Bo Baslund, Daniel Blockmans, Pieter Vermeersch, Marcos Lopez-Hoyos, Martine Vercammen, Elisa Barret, Friederike Hammar, Ulrich Leinfelder, Michael Mahler, Nina Olschowka, Dirk Roggenbuck, Wolfgang Schlumberger, Roger Walker, Johan Rönnelid, Jan-Willem Cohen Tervaert, Elena Csernok and Walter Fierz for (i) the European Federation of Laboratory Medicine (EFLM) Task and Finish Group “Autoimmunity Testing,” (ii) the European Autoimmune Standardization Initiative (EASI) and the (iii) European Consensus Finding Study Group on autoantibodies (ECFSG)