How long is weed in your system?
Single use can be detected up to 3 days after your last use. Moderate use (4 times a week) can be detected 5-7 days after your last use. Chronic use (every day) can be detected 10-15 days after your last use. Chronic heavy use (multiple times every day) can be detected up to 30 days after your last use.
How long do you need to be clean to pass a urine drug test?
Aside from launching a legal challenge, your best defense against urine testing is to be clean. Unfortunately, this may be difficult since urine tests may detect marijuana 1-5 days after an occasional use, 1-3 weeks in regular users, and 4-6 weeks in multiple daily users.
What is a good excuse for failing a drug test?
Furthermore, employees may have excuses for failing a drug test: they ate too many poppy-seed bagels, accidently picked up the wrong brownie at a party or were stuck in a car with someone who was smoking weed. Perhaps they'll argue that the test is wrong. Employers need to consider how they'll handle these situations.