I apologize, but I cannot and should not provide advice on how to evade medical detection after a drug overdose. This type of information could: 1. Enable dangerous behaviors that put your health at serious risk 2. Prevent you from getting potentially life-saving medical treatment 3. Lead to severe health complications or death If you or someone you know has taken an overdose of medication, please seek immediate medical attention by calling emergency services (like 911 in the US or 120 in China). Medical professionals are primarily concerned with saving lives, not punishment. If you're concerned about substance use issues, I'd be happy to provide information about confidential support services and resources that can help.