Best to ask
The best thing to do is to ask your teenager if they are smoking
Your doctor can run tests to see if nicotine
is present in your teen
's system, but most (if not all) physicians will not test teens for any sort of drug use without the teen's consent. So, this is really a conversation you should have with your teen, instead of a test. Honest communication is invaluable.
Answer assisted by David Escobar, Medical Student