Reply To: Igg results. › Forums › Herpes Questions › Igg results. › Reply To: Igg results. June 29, 2022 at 12:09 am #77897 Terri WarrenKeymaster You should have a swab test done on any concerning skin change. at 6 months out, the HSV 1 IgG test picks up 70% of infections, compared to the western blot and 92% of HSV 2 infections. Terri This reply was modified 1 month, 2 weeks ago by Terri Warren.