Possibly. Some drugs stay in your body longer than other drugs. For example, cannabis can remain in your system for weeks and have no effect at all on your driving skills such a long time later if you are caught driving – however if the drug is detected by a positive lick test, you risk a criminal record, disqualification and a fine.
Another example - we have acted for people that have taken amphetamine 4 and 5 days prior to being random drug tested by lick test at the side of the road – and failed the tests.

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