Hi.. Wondering about this. I've read so many different threshold numbers for HHV6 IGG levels and treatment with something like Valcyte, I thought I'd look to all of your experience. Last year, I had HHV6 (actually marked HSV6 on Quest) of 1:640. I think that is the threshold that at least some of the places (Montoya, etc) says you treat at. However, I had them re-tested and they came in recently at 1:40, which is quite a bit lower. I've been on (a fairly low dose so far) Equilibrant…and I even think i read a member here saying that their HHV6 seemed to go down while on Equilbrant. Anyway, can anyone tell me if a 1:40 is possibly relevant? It seems like that level is quite low. Thanks.