“…15,16 FPIA for the determination of CBZ in serum is already used 17 and the application of this kind of assay to surface water samples has been recently described. 18 Previously described CBZ immunoassays were performed with a monoclonal anti-CBZ antibody, which showed high cross-reactivity (CR) against CBZ metabolites and related compounds, but also to the antihistaminic drug cetirizine which is not structurally close to CBZ. 19,20 This leads to overestimations of CBZ levels in water samples, especially during the hay fever season, when the antihistamine is present in waters.…”