Actually Killer in this case I do know for sure, not a matter of rose colored glasses. He's tested regularly by po and the stakes are way too high for him to fail. That and we are together 24/7. I don't think I have time to get synthetic, I have to test Monday morning. I think it may have come back dilluted. He is in construction and it is hotter than hell right now so he drinks water by the gallons when at work and stopped and had a couple of beers on the way home. We also wondered if maybe it was because he gave it to me the night before instead of that morning. It was less than 24 hrs old but he thinks that might have something to do with it. Let me know what you think if you have time. Thanxx!