VIDAS® Varicella-Zoster IgG (VZG) is an automated qualitative test for use on the instruments of the VIDAS family, for the detection of IgG antibodies to varicella zoster virus in human serum using the ELFA technique (Enzyme Linked Fluorescent Assay). VIDAS VZG is intended as an aid in the determination of immunological experience with varicella-zoster virus.