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The Weed Blog

‚ÄčMixed Findings Show Strengths and Problems Among Analytic Testing Services

How accurate is cannabis potency testing? California NORML and Project CBD have released the results of their first “Ring Test” to assess the accuracy of analytical laboratories.
In the winter of 2010-2011, California NORML and Project CBD initiated a “Ring Test” to assess the accuracy of the numerous analytical cannabis testing laboratories that have recently emerged to serve medical marijuana dispensaries, breeders, growers and patients.
Results of the study, coauthored by California NORML Director Dale Gieringer and Dutch scientist Dr. Arno Hazekamp, are reported in the Autumn 2011 issue of O’Shaughnessy’s, the Journal of Cannabis In Clinical Practice [PDF].