The One Step Test for B2-MG (colloidal gold) is intended for use together with the FIA8000 Quantitative Immunoassay Analyzer (FIA8000). The product employs colloidal gold immunochromatogrphy to determine B2-MG in human serum, plasma, or whole blood specimens. Two monoclonal antibodies are employed to identify B2-MG specifically, resulting in a purplish red streak appears on the test line. The color intensity of the test line increases in proportion to the concentrations of B2-MG. Then insert test card into the FIA8000 Quantitative Immunoassay Analyzer, the concentration of B2-MG is measured quantitatively and displayed on the screen. The result can be transmitted to the lab or hospital information system.