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Percentage of participant OF pools with concentrations remaining within ±20% of initial baseline concentrations after 1-3 months 4°C storage. Δ9-tetrahydrocannabinol (THC); 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (THCCOOH); Δ9-tetrahydrocannabivarin (THCV); Cannabidiol (CBD) and Cannabigerol (CBG).
