For Research Use Only. Not for Use in Diagnostic Procedures. This is an ON-DEMAND item which requires a minimum order quantity and extended lead time. Please Contact Us for a quote. ELISA method for the measurement of IgA isotype auto antibodies targeted to B2GPI. Assay designed with highly purified human B2GPI, obtained with non-denaturing methods, for autoantibody immunocapture. These are then revealed with a goat antibody specific for IgA, alpha fragments and labeled with peroxidase.