File:Fig4 Jikomes SciReports2018 8.jpg

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Figure 4. Labs differ in the propensity to detect low levels of CBD in chemotype I flower. (a) Kernel density plots of each lab’s distribution of total CBD levels below 1.0% dry weight for chemotype I flower (y-axis scaled to one). Most labs show a local maximum near 0.1% total CBD, which is a commonly reported LOQ. (b) Fraction of chemotype I flower with total CBD levels below 0.1% dry weight. Bars indicate proportions +/− 95% CI for a binomial proportion. (c) Effect size matrix indicating the magnitude of interlab differences shown in panel B. Effect size is quantified as Cohen’s h (see Methods).


Jikomes, N.; Zoorob, M. (2018). "The cannabinoid content of legal cannabis in Washington State varies systematically across testing facilities and popular consumer products". Scientific Reports 8: 4519. doi:10.1038/s41598-018-22755-2. 




Jikomes, N.; Zoorob, M.

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