Hopefully this is the right place to post this: Well, my good friend might have a test coming up soon. He doesn't know exactly when it is, but most likely sometime next week (he will be notified). He has been smoking every other day, give or take, for the last few months and used to smoke more than that in the past. Is there anything he can do to prepare for the test? I think the best option for him might be synthetic urine in a tube, but at this point I'd like to hear first hand experiences, so I can relay the information to him. Thanks.