Hi Regina-
Bummer! That doesn’t help any, does it? Yes, make sure you ask exactly what they tested for because they do have different tests for different issues. Did they send it out to a lab? ACV stands for apple cider vinegar. If you buy it, make sure to get the unfiltered kind. It contains the “mother” and is kind of cloudy. It is extremely strong, so make sure you dilute and start with a small amount. I don’t use it regularly, but I guess others do. I also see it listed in some ingredients. It is in the raw nuggets that I occasionally feed. As for avid, I don’t know what that is either. Good luck with your elimination diet.
