I really appreciate the time and effort you took to share this with us. Thanks for providing so much invaluable information.
I think it's interesting that you have elevated IL-8 and an IgG 3 subclass deficiency. Both these abnormalities were associated with XMRV infection in Dr. de Meirleir's poster presentation of 16 XMRV-positive PWCs at the XMRV workshop. So, it's quite possible that your XMRV result is a false negative; keep us posted on your results as the testing becomes more sensitive and accurate.
Here's hoping that Dr. Peterson's treatments give you benefit. With any luck, the early positive effects of Valtrex will reappear.