sorry to say but i have reason to believe that their results are not accurate. I have completed over 12 university chemistry courses and have a fair bit of knowledge on extraction, purification, and identification of unknown compounds. Believe me, any percentages of THC/CBD/CBN etc that are above 20% are absurd. Think about this. 20% means that 2g/10g is THC. There's no way, even 1% THC would be insane. The majority of a plants weight is water, plain and simple. Even if dried, water will still be there. Starch, cellulose, nutrients, chlorophyll, carbohydrates and fiber also contribute to the majority of the total plant mass. At this point, your probably at 99% or higher. The glandular trichromes that contain the majority of THC have many impurities besides THC, such as non-psychoactive cannabinoids that are remarkably similar in structure to THC. lipids, fats, oils, tannins, and even the aromatic chemicals that give cannabis its smell are in very high molecular weights. Cannabis has thousands of individual molecules within it. To say that one non-essential molecule called THC accounts for 1/5 of its dry weight is just silly. THC is not an essential compound, its not used in metabolic processes such as photosynthesis, its not a cofactor or an enzyme, if there is no thc the plant still lives. Cannabinoids such as THC are believed to simply be an evolutionary adaptation for UV light. When scientists studied cannabis plants, they found out that the higher elevation strains had higher THC concentrations. The belief is that there is greater sun radiation exposure at higher elevations so THC protects the sensitive plant from DNA damage by UV blockage, much like a sunscreen. Humans have a compound in their skin called melanin- I doubt your going to find someone who has 20% of their weight in a pigment that filters out UV haha. i know its apples to oranges but still. Someone needs to step up and post a THC percentage protocol outlining the method used, the raw data obtained, and every step that was completed. An NMR test would also be very useful in detecting the purity of the isolated compound obtained by identifying its structural resonance.
