Rosetta Stoned

I'm new here and would like to say thanks in advance for any feedback. I'll jump straight to the specifics: I'm 6'1", 150lbs. (skinny as hell) and have a rapid metabolism (can't gain weight to save my life). I've been an every-day smoker for well beyond the past 30 days, sometimes only smoking once a day, sometimes multiple times a day, but I haven't smoked for 9 days as of today. I've drank at least 81oz. of water each day since I stopped smoking. I don't work out, but I started a 30 minute cardio/body weight routine two days ago that I'll keep up until it's deemed okay for me to piss. And again, this is a pre-employment test, with a physical. I haven't taken any supplement/detox substances, but some people I've talked to speculate that because I'm so skinny and because I've drank heavy amounts of water each day, there's a possibility that I could pass already. Is there any chance of that? What does everyone here advise? Thanks again, looking forward to responses.