Hello. The big farms will grow thousands of plants and pick the very best ones to keep and breed with. When testing their seeds they take the very best of the of the new strain and send them in to be tested. Each plant can put out hundreds of seeds. Most seeds are average for that strain but a few are very poor and some are very great. It's the great ones that are tested. If you grow only a few seeds at a time you might take a life time to find the great ones. Some company's will add all the cannabinoids in with the THC count. That might be why the count is high. Chuck.