In US and Canada: For Research Use Only. Not for Use in Diagnostic Procedures. The ZYMUTEST Anti-VIII MonoStrip IgG kit is a qualitative or quantitative assay of ELISA sandwich type for measuring auto and allo-antibodies to Factor VIII, of the IgG isotype, in human plasma where auto-antibodies to FVIII must be sought. This kit is for research use only and must not be used to patient diagnosis or treatment.