CBD has a half-life of around 14 hours, so its effects can last up to a week. Depending on the person and the situation, it usually takes 5.5 half-lives for a drug to be completely eliminated from the system. This means that CBD taken orally would leave the body in 11 to 28 days, but it may be undetectable in a blood test much sooner. The half-life of vaporized or smoked CBD is much shorter than that of CBD ingested within a few hours.
Regular users may take longer to remove CBD from their system than casual or new users. When you vape CBD, it enters your lungs quickly and leaves the body quickly. The highest bioavailability comes from vaporized or smoked CBD, and CBD oil tinctures applied sublingually come second. For first-time smokers and vapers, cannabis (THC) is detectable for about three days in the urine, and for regular or weekly smokers, the detection period is around one week. Research into how long CBD oil stays in the system is limited, as there is no real demand for testing. Body mass index, water content, and metabolism can all influence how long CBD stays in your system.
Even if it remains for longer, job applications don't have to be a worry. When you vape CBD oil, it is heated to an extremely high temperature which leads to its vaporization, allowing the CBD to be inhaled and enter the bloodstream. This means that CBD sprays can stay in the body for 10 hours or about 2 days, chronic oral consumption can mean that CBD stays in the system for 10 to 25 days, and CBD can stay in the system for about a week after smoking.