After how many weeks after exposure does an hsv 1&2 antibody test turn from igm to igg?

Variable: Both igm and igg can be present concurrently. Igm response may appear about a week after exposure and may last a few months. Igg is likely to appear about two after after exposure and be present life long.

3 weeks: Approximately 50% of people will have igg antibodies detectable by 3 weeks. Most people will have igg detectable by 3-4 months and occasionally it may take up to 6 months.