That’s the trap. It is important to notice behavior in a teen and consider in-home testing to determine if a positive result should lead to intervention. If the result is oxy’s, heroin, meth, or anything like that, then, YES! Accept it and map out some solutions. And in the process, don’t forget to take care of yourself.
When a teen becomes an addict, that person you once knew and planned a future for has effectively checked out. What you experience is an addict who will play you better than you can play them. After a period of time, your teen’s brain becomes progressively “hard-wired” to his or her drug of choice, to use a colloquial term.