Background: This Quantitative Sandwich ELISA kit is only for in vitro research use only, not for drug, household, therapeutic or diagnostic applications. It is intended to be determinated IDUA concentrations in Human serum, plasma and other body fluids. Using Purified Human IDUA antibody to coat Microelisa Stripplate wells to make solid-phase antibody, then add IDUA and IDUA antibody which has been labeled with HRP to wells, then the reactants become antibody-antigen-antibody-enzyme complex, aft