Read a book called Passing Drug Tests. It was written by a guy in Boulder, CO who did five years of parole, smoking weed just about everyday, and what he did to pass all of his random UA's. The co-author is a doctor of chemistry so it is informative and accurate. It explains about metabolism, the body's detoxification system, and what really works to get THC metabolites out of your body very quickly. The author now writes a monthly column for SKUNK magazine and he was recently hired by Green Candy Press to write a chapter about detoxification to be added to the Marijuana Chef Cookbook, he absolutely knows what he's talking about.