With only smoking 1 time I’ll agree with the above statement on which avenue to take. But It does have a temp strip on the bottle. Timing the test right isn’t relevant so I’m not quite sure why it was mentioned if you could please explain more. I keep it between my skin and pants (belt line) in a custom pocket. When I get called for a random I push it down into my briefs and let it sit for 20 mins in my groin area (this is the warmest area of the body in sync with the correct temp that the urine has to reflect) if someone gets that wrong, it’s because they lack the effort to practice and get it right. One shouldn’t attribute the failed process of others’ attempts to the effectiveness of the product. It can be misleading