how long does drugs stay in your system chart
4 Usually how long can weed stay in your system for drug tests? Dr. Heidi Fowler Dr. Fowler. THC: Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana â should be out of urine in 7 to 100 days. Single use marijuana can be detected 12 to 24 hours in blood. Regular use marijuana can be detected for 2 to 7 days in blood. ...Read more.