Basophil activation test for the in vitro diagnosis of tocilizumab hypersensitivityKoren, Ana (Avtor) Dejanović, Luka (Avtor) Korošec, Peter (Avtor) Kopač, Peter (Avtor) Basophil activation test (BAT) is a useful approach for diagnosing hypersensitivity reactions to tocilizumab. BAT offers insight into IgE-allergenic activity beyond sensitisation, complementing skin tests and IgE measurements.Blackwell Science, 1997-20262026-05-12 14:19:10Neznano29369Clinical & experimental allergysl© 2026 The Author(s). Clinical & Experimental Allergy published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.