CBD oil can be made from both marijuana and hemp. Hemp based CBD oils, when used in low doses, are unlikely to result in a positive test because they often don’t contain high enough levels of THC for detection. If an employee is using hemp-derived CBD oil, most individuals would have to consume a relatively large amount of the product, to test non-negative. Note: Taking that much CBD oil could result in the user’s impairment.
Doses aren’t standardized across brands and some recommend higher doses than others. In addition, hemp-derived CBD oils aren’t FDA regulated and the advertised THC levels of products can be unreliable. As a result of varying dose recommendations and uncertain THC levels, taking CBD oil comes with a risk of a non-negative test result.