Although a range of analytical methods have been published in recent years , there is no general agreement on which analytical method is most suitable and accurate. Additionally, there are currently no generally accepted guidelines or certifications to determine the qualifications of cannabis labs. As a result, cannabinoid analysis can differ significantly between labs , even when the exact same sample is analyzed multiple times . This not only poses a risk to consumers (who do not know how trust the label on their product) but may also lead to business-to-business conflicts about the quality or value of intermediate products. Additionally, inaccurate analytical results may lead to legal problems if the THC content of a CBD product unexpectedly turns out to be higher than the maximally allowed limit. It seems clear that a better agreement on the conditions for lab testing of cannabinoids is urgently needed.
There is certainly substantial anecdotal evidence that CBD can help treat anxiety, but the scientific evidence remains very limited, says Blessing. “Probably the best evidence comes from studies on anxiety giving speeches, comparing normal subjects, and those with social anxiety disorder,” she says. “The doses that were found to reduce anxiety when someone’s giving a public speech experimentally were[approximately] 300 mg.”