Full-spectrum products contain not only CBD but many other beneficial compounds found in the hemp plant. These chemicals are thought to encourage the entourage effect; a proposed theory that the entire sum of the ingredients in the plant work synergistically to help produce optimum health.
But while the amount of the cannabinoid THC in these products is negligible, it has occasionally caused a positive result in drug testing. Sometimes, this is due to individual metabolism or the amount ingested. In either case, while a positive urinalysis is rare, the possibility does exist among those who are taking full-spectrum tinctures. Many users, particularly ones whose occupations depend upon clean drug testing, prefer not to take the chance.