We sell CBD isolate products and CBD full spectrum products and the answer differs per product. CBD isolate products are THC-free and will not cause you to fail a drug test. CBD full spectrum products contain CBD plus a spectrum of other cannabinoids, including THC. The Delta-9 THC level in any of our CBD full spectrum products is at or below 0.3% by dry weight. It will not get you high, but will test positive for THC.