Consumer Lab (consumerlab.com) recently did independent lab testing and issued a report on a small number of CBD products, including two pet products and maybe five or so human products. However, it lives behind a paywall.
I think they may still offer a free trial though, so you might consider signing up to view it, and maybe canceling if you don't want to pay for membership -- though I do find membership is worth having, for both dog and human supplements. It took me a while to decide it was worth paying for, by I find myself reviewing their back-catalog of product tests pretty regularly. Since the US FDA doesn't regulate supplements, and many are either adulterated or don't contain what the label says, it's nice to get third-party verification as to what's in them!
The only bummer about them is that they allow companies whose products fail to pay to remove that information. So if a product isn't there, you don't know if it's because they just didn't test it, or they tested it and it failed. If it's there and passed, it actually passed -- so that's useful. I would just really like to also know the ones that failed!
Last edited by Magwart; 12-31-2018 at 12:43 PM.