Comme le souligne une analyse comparative de l’évolution des prix de l’héroïne, de la cocaïne et de la marijuana, « Another problem is that the DEA does not test marijuana for THC content, so there is no marijuana counterpart to the pure grams reported for cocaine and heroin.
As emphasized in a comparative analysis of changes in price of heroin, cocaine and marijuana, " Another problem is that the DEA does not test marijuana for THC content, so there is no marijuana counterpart to the pure grams reported for cocaine and heroin.