Fentanyl is a synthetic opioid that’s 50-100 times stronger than the pain reliever morphine. While some people use fentanyl on purpose, many others get it in their systems without their knowledge.

Hair follicle drug tests involve removing a small hair sample for laboratory testing. Results can show if a person has been using certain drugs or prescription medications in the previous 3 months. It ...

People swear they were only using 100% cannabidiol (CBD), yet they failed their drug tests anyway. But urine screenings don’t check for CBD, so how can using this cannabis compound get you in trouble?