This question has also been asked and answered here:
How long does Marijuana stay in your system?
14 Aug 2011
As a rough guide: if you smoke the occasionally joint, it'll stay in your system for up to 10 days. If you smoke regularly, up to 45 days and if you smoke constantly, 90 days.
As for being detectable in a drug test, well this depends on the type of drug test. Urine test will detect up to a month after but a hair test will show positive if you've smoked any weed in the last 3 months.
Also important to note that marijuana residue is stored in the fat cells, so if you're skinny or have a high metabolism, the time it takes to leave your system may be reduced.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
How long do you need to wait before you are clear to take a drug test?
9 answers • 30 Jul 2009
I have a friend who smokes now and then, and they will have to do bloodwork soon? He smoked some last week, and will have to have bloodwork done on ...
1 answer • 17 Feb 2010
ive heard a lot of different people say different ways to get marijuana out of your system in 1 or 2 days is it true and how,and is it legal in south ...
3 answers • 13 Nov 2010
Im a 6ft 145 lb male with a fast metabolism. I havent smoked marijuana in 24 days and my drug test is in less than 36 hours. Prior to my last day ...
2 answers • 18 May 2011
1 answer • 19 Sep 2011