Ok, I addressed this on another less pertinent thread. I have tested myself after heavy thc usage and heavy detox before and have gotten my time of detox down to less than a week. (5'7" 135lbs, and at the time active.) However there has always been a question looming over my head when I use these home strips with those Incredibly annoying lines of faintness. The tests always say that no matter how faint the lines, if they show your golden. Ive never had mine be Completely of a solid color however, always faint, like there was just enough not to show. Anyone happen to be experienced enough in this field to tell me if the faintness truly represents the amount of thc metabolites the test is finding in my urine, or if perhaps it varies naturally from test to test depending on the amount of ink used and etc. Also, this is a little off topic, and Perhaps covered in many other threads, but it would be handy to have the answers clumped together nicely in this thread. If the preliminary tests are always strips in labs, as brandon and others have said, are they tested for the amount of nitrates, creatine, and all those other important chemicals. Or do the strips perhaps require those chemicals to show a result at all. Early thanks to anyone with the knowledge to answer this . I know its a long post, but I home test often, and have always wondered if a faint line for my home test would be a positive at a lab.