Investigation of pharmaceuticals in processed animal by-products by 1 liquid chromatography coupled to high-resolution mass spectrometry. 2 3 Jaime Nácher-Mestre, a,b§ María Ibáñez, a Roque Serrano, a Clara Boix, a 4 Lubertus Bijlsma, a Bjørn Tore Lunestad, c Rita Hannisdal, c Martin Alm, d 5 Félix Hernández, a and Marc H.G. Berntssen c* 6 7 a Research Institute for Pesticides and Water (IUPA). Avda. Sos Baynat, s/n. University 8 Jaume I, 12071 Castellón, Spain. 9 b Institute of Aquaculture of Torre la Sal (IATS, CSIC), 12595 Ribera de Cabanes, 10 Castellón, Spain. 11 c National Institute of Nutrition and Seafood Research, PO Box 2029 Nordnes, N-5817 12 Bergen, Norway. 13 d European Fat Processors and Renderers Association (EFPRA). Boulevard Baudouin 14 18, 4th floor, BE - 1000 Brussels. 15 16 17 18 19 20 21