S.G.O. Johansson

SGO Johansson is a Swedish biotechnology company founded by Professor S.G.O. Johansson, a pioneer in immunology and co-discoverer of Immunoglobulin E (IgE). The company focuses on the development and clinical implementation of advanced allergy diagnostic technologies, most notably the Basophil Allergen Threshold Sensitivity (CD-sens) test. CD-sens is a flow cytometry-based platform that measures the activation of basophils in response to allergens, providing a highly sensitive and safe alternative to traditional in vivo provocation tests. The company's innovations are used to diagnose complex allergies, monitor the efficacy of biological treatments like omalizumab (Xolair), and support component-resolved diagnostics. Headquartered in Stockholm, SGO Johansson operates in close collaboration with the Karolinska Institutet and major diagnostic partners like Thermo Fisher Scientific.