Guardian products have certification from an accredited third party testing laboratory. Guardian's Nano Amplified Hemp Extract is the safest CBD isolate on the market. Our unique isolate formula is 99.9% CBD - opposite of the competition. Most products in the CBD market use broad-spectrum or full-spectrum formulas. These formulas contain other cannabinoids like CBG, CBN, and THC. Research is still new, and scientists aren't certain how these other cannabinoids metabolize. Posing greater possibility for unsafe levels THC in broad-spectrum and full-spectrum formulas.