The use of full-spectrum CBD products that contain small amounts of THC may appear in workplace drug testing. Isolated CBD, however, won't show up in a drug test since it's not what the drug test is looking for. If there is enough THC present, it will be detected. If you know that a screening will be done in the near future, it's best to avoid ingestible CBD products altogether.
Broad-spectrum CBD and CBD isolates are less likely to contain detectable levels of THC due to extraction methods used to remove THC from formulations, as well as other terpenes and cannabinoids in the case of isolated CBD. It's not easy for consumers to be sure how much THC a particular CBD product contains. Even CBD suppliers have said that isolated and broad-spectrum CBD products are not at risk of testing positive during workplace drug tests. In some cases, a drug test is an effective way to measure trustworthiness when access to sensitive information is required.
CBD in a drug test alone won't be detected, the test doesn't look for it, and it's not an illegal substance. However, false positives on a drug test with CBD oil can occur if pure CBD oil contains more than 0.3% THC. It's important to note that some CBD products may contain potentially problematic ingredients.