What test distinguishes between active HHV6 infection and past infecti

[Motherof2]

My son's IgG titer was 1:160, which was slightly elevated, but IgM was very low. Report says past infection. How can you tell if there is active infection ?

[Hopeny]

Typically IGM is current infection and IGG is past. That can vary for some infections but not sure for HHV6. My daughter had a low elevated IGG as well, from the research I did it seems most of the population has this. My integrative doc did not think it was a factor for us so I didn't research any further.

[Mayzoo]

My kiddos was a 1.56 with a positive of >0.99. Her immuno was not too worried about it right now because she has other much more out of whack stuff. He may worry about it when he gets the other stuff under better control. He is kinda taking care of most critical first.