Qualititative detection of IgG antibodies specific to HSV type 1 infection; confirm or rule out possible infection with herpes simplex type 1 virus in prenatal patients. In a patient with no history of lesion disease, a positive result for this test may be indicative that the primary infection was asymptomatic. Once infected by HSV, it is possible for a patient to shed virus without the development of lesions (asymptomatic shedding). This test does not indicate the site of HSV infection. The magnitude of the Index Value is not indicative of the amount of antibody present in the patient sample.