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CAL NORML: How Accurate is Cannabis Testing? Ring Test Assesses the Labs
Dale Gieringer, Cal NORML
In the winter of 2010/11, 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 collectives, breeders, growers and patients. Results of the study, which was 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 on pages 17-18, posted at: http://www.canorml.org/RingTestOShaughnessys_Aut11.pdf

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