Cross-Reactivity of the Anti-Human D-Dimer Monoclonal Antibody 1C9-6F10 to Canine Fibrin Degradation Products

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The cross-reactivity of the anti-human D-dimer antibody 1C9-6F10 to the canine D-dimer was evaluated by western blotting using purified canine fibrinogen, fibrin degradation products (XDPs) and plasma from a dog with suspected disseminated intravascular coagulation (DIC). The antibody cross-reacted with canine XDPs and plasma from the dog with suspected DIC. A latex agglutination assay using 1C9-6F10 measured the canine XDPs in dogs. In conclusion, the antibody 1C9-6F10 cross-reacted to the canine D-fragment with high specificity, but lower affinity compared with the human D-dimer. The latex agglutination assay using the 1C9-6F10 antibody was used to measure canine plasma D-dimer concentrations.