Andreeva, Cindy2025-12-072025-12-072025-11-252367-5314https://doi.uni-plovdiv.bg/handle/store/813The report examines the legality of drug tests used by law enforcement agencies, emphasizing the need to follow established procedures for their validity. Issues such as false positives caused by technical flaws, reactions to legal substances, and procedural violations are addressed. The main problems with the probative value of the tests are discussed. In addition, the report suggests improving the devices with which they are tested, greater awareness of citizens about their rights, and more. Lawful procedures themselves are key to avoiding undue sanctions.otherdrug testslegalitychecks upproblemsArticle