How long does weed or marijuana stays in urine?

It will depend on how frequently you smoke or how much dose you take in at a time. The higher the dose or the more frequent you smoke the longer it will stay in your urine. According to a mayoclinicproceedings, it can last for up to 3 days for occasional users, 5-7 days for moderate users, 10-15 days for daily users and more than 30 days for users who take it multiple times per day.