My brother doesn't drink, does take prescription medication and uses CBD oil in a vape pen. He was driving to pick up his adult son from work at around 7pm, when he saw a number of police vehicles, including cars and vans, descend on a cul de sac off the road he was on and, because he's nosey, he stopped at the top and watched the excitement unfold. It was a raid. Not very exciting, so he continued on his way. A few minutes further down the road he sees a police car in his mirror flying up behind him with sirens and lights, he pulls over to let them pass and is surprised when it pulls in behind him. They told him they stopped him for speeding as they had to travel at 70 mph to catch him, and took a swab. He wasn't speeding and of course they had to speed to catch a car that was already a long way ahead before they started the pursuit. The swab showed positive for cannabis and trace of cocaine. They took him to the police station for a blood test, results not back yet, never showed him the swab results, didn't give through any forms with him and bailed him out at around midnight. Do you have any advice to help him with this situation please? He has researched the meds he takes and they do contain ingredients that can show up on blood tests, but never in his life touched cocaine. This was in Merseyside. Any advice greatly appreciated.