While CBD oil is different to consuming cannabis, be aware that full spectrum oils do contain a small percentage of THC. Don’t worry though, it’s a miniscule amount of 0.3% or less. Because of this, CBD oil cannot get you high and won’t necessarily prevent you from passing a drug test. This doesn’t mean you should be too generous when applying the oil. Even small amounts can become too much if used in excess. If you’re concerned with the oil affecting an upcoming drug test, then call the testing center to find out the specific test that you’ll be given.