If you've only been using CBD for a couple of days or weeks, in moderate doses, CBD should be eliminated from the body within a week. On the other hand, if you've been using it for quite a while in higher doses, CBD lasts longer in your body and will only be fully eliminated after a few weeks or a month. You don't need to worry about CBD being in your system if you do a drug test. Unless you've been using Full-spectrum CBD oil, which has psychoactive THC compound in it and might influence your test results. If you need to avoid THC, we recommend using pure CBD Isolate. One of the leading CBD Isolate producers is CBDistillery.