In sandwich ELISAs, less than 0.05% cross-reactivity with recombinant mouse (rm) MIP-3 beta, recombinant human (rh) GRO alpha, rhHCC-4, rhEotaxin, rmMIP-3 alpha, recombinant rat MIP-3 alpha, and rhMIP-3 alpha is observed. Reconstitute at 0.2 mg/mL in ste