I *was* a heavy daily smoker (all day everyday for 20 years except while I was at work) too PhotoGeek. I am a male/6'1/175lbs most days and do very little aerobic excercise. I decied to let my system dry out and also bought a bunch of test strips and found that it took me 36 days to get a negative line (or what I considered negative as I as well thought I might be hallucinating the line on other days) without any dilution loading. I have my test on Tuesday probably and I'm still going to use the dilution procedures in the dilution sticky -- Just wanted to let you know that it took that long for my body to meet the < 50ng level -- It may be my genetics or metabolism, but I'm pretty sure I'm testing negative now as it's been negative with my first urine of the day for 2 days now (and today is my 40th day since smoking -- I know how hard that is too!!) -- Good luck with your test and mine -- I'll post when I know something for sure, but I'm still nervous and hoping to pass. Just wanted to let you know how it's been going for me. Today I went out and ate medium steak, pot roast, ham and chicken in hopes of upping my creatnine levels at a local Golden Corral.