Compliance Testing of Hemp (<i>Cannabis sativa</i> L.) Cultivars for Total Delta-9 THC and Total CBD Using Gas Chromatography with Flame Ionization Detection.

However, the final rule does not provide guidance on what sources of uncertainty are included in the calculation, and it is probably difficult for laboratories to estimate uncertainty due to field sampling, which this study shows may be significant based on the observed within-cultivar plant-to-plant viability.

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