Okay...so it's been almost 5 weeks. I am not sure how long it's going to take for me to pass a drug test administered by a workplace. I used to smoke very potent weed on a regular basis (All day, everyday for almost 3 years). I've heard anywhere from 1-3 months. I want to buy a home drug test like from Walgreens, but I want to know if it will be as effective as the one I'll have to take for a job. Does anyone know anything about this?