All supplements manufactured in the US are required to obtain a Certificate of Analysis, while this report can help inform on the various macronutrients present, it won’t be able to precisely identify their sources.  For example, it can tell you the amount of Beta-Glucan polysaccharides present, but it won’t be able to tell you what portion of those are truly coming from Lion’s Mane, for this you need a test which can recognize the genetic differences between various species.