I hate to sound redundant after reading several stories that are similar to mine, but I have never had to take a drug test before and I am still nervous. I am being sent to an Esceen clinic for a job, and it claims to be the best. When I take the test it will be about 17-19 days since I last smoked, I am 145 lbs, 5'5", and have roughly 15% body fat. I have been cycling everyday, taking niacin, and drinking tons of water. So my questions are has anyone used an esceen clinic before, are they pretty much a dip test? And what else can I be doing because I really have to pass this one. Thank you!