OD ratio < 0.90 indicates no detectable HSV IgG antibody. Indicates no current or previous infection with HSV-1 or HSV-2.
OD ratio 0.91 to 1.09 is equivocal HSV IgG antibody. Suggest a new specimen be collected and retested.
OD ratio > 1.10 is positive for IgG antibody to HSV. It indicates a current or previous infection with HSV-1 or HSV-2 or both.