Anti-Human IgG (Fab Fragment specific), AlpHcAbs® Goat antibody is designed for detecting human IgG fab fragment specifically. Anti-Human IgG (Fab Fragment specific), AlpHcAbs® Goat antibody is monovalent, recombinant single domain antibody fused to goat IgG Fc (mutation). Based on immunoelectrophoresis and/or ELISA, Anti-Human IgG (Fab Fragment specific), AlpHcAbs® Goat antibody reacts with human IgG fab fragment selectively, no reactivity with rabbit, mouse, rat, goat IgG.