For Research Use Only. Not for Use in Diagnostic Procedures. Two site ELISA method for the measurement of B2GPI on plasma or any biological sample where it must be measured. Assay designed with polyclonal antibodies specific for B2GPI, for coating the microplate (immunocapture) and also labeled with a Horse Radish Peroxidase (HRP) marker. This assay measures homogeneously B2GPI in plasma.