So how did it go? The government doesn't care about dilution. I had about a week break and urinated twice before giving a full cup. I used mid-stream and it was clear for the most part. They never say anything but this is my first time going under the 2 week line. I am a little worried. I wonder how effective dilution really is? If a place doesn't care about dilution and you use it, how effective can it be. Could you pass with dilution after smoking a few days before? Sorry, I don't want to jack your thread but I would say they are for the same thing. good luck meng.