My company recently started drug testing, so naturally, I got some testing supplies myself. For a little background... I've smoked daily for 14 years, and in the last 2.5 years, smoked an 1/8th a day. After 3 days, I test clean naturally, and pass within 24 hours if I only smoke a joint a day. I have low body fat, and a high metabolism, as well as a physically demanding job. I'm sure all of which contribute to a faster clearance time. Cheers, to having the same wonderful luck I have!