I am not concerned that a few Valtrex pills would impact your results. If you had taken an extended course of Valtrex or any other antiviral right after you thought you acquired herpes, that could impact testing but it would need to be for a longer period of time with many more pills. Lysing and activated charcoal would have no impact on testing. I think years ago, there was confusion about if cold sores were caused by herpes. We certainly know now that they are caused by most commonly HSV one infection.
Terri