Less than 15 days.
couple of days
a week
Doesn't matter how long since you last smoked. Weed stays in your system from 2 weeks to a month.
3 days max
3 days
It's traceable for weeks, maybe months, by professionals.
If you were a daily smoker, up to 6 months.
a month if you dont smoke all the time but if you smoke alot then it could take up to two months
1 month
There are many ways to get weed out of your system, there are cleansing pills that get it out of your system water also helps, but pretty much its all luck.
Weed can stay in your system up to 90 days. It's all dependent on your metabolism, body fat, etc.
Research tell us that it can take as long as 6 months to keep in hair follicles.