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Design schematic of the Truvian Easy Check COVID-19 IgM/IgG test device. A, The device is an implementation of immunochromatography that relies on capillary flow of sample across immobilized anti-human IgM, anti-human IgG, and control (anti-chicken IgY) antibodies (Ab). Detection is achieved by secondary binding via gold-conjugated antigens (Ag). B, Macro design of the test device. Figure used with permission from Truvian.
