Table 1

Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of IgM antibodies for the diagnosis of first episode genital herpes

Diagnosis of “new” genital herpes
IgM antibodyYesNoTotal
Sensitivity 45/57 (79%), specificity 69/69 (100%), PPV 45/45 (100%), NPV 69/81 (85%).
Present4545
Absent126981
Total5769126