if i smoked marijuana once in my life how long it stays in my system?

Question

one time usage 4-5 puffs how long it stays?

Answer 1

This should help you.
Cutoff and Detection Post Dose
The initial screening cutoff level is 50 ng/ml. The GC/MS cutoff level is 15 ng/ml. The elimination half-life of marijuana ranges from 14-38 hours. At the initial cutoff of 50 ng/ml, the daily user will remain positive for perhaps 7 to 30 days after cessation. At the confirmation level of 15 ng/ml, the frequent user will be positive for perhaps as long as 15 weeks. Marijuana metabolites' storage and slow release from lipid tissues is the reason for this long detection period.
http://healthy.net/scr/article.asp?Id=8085
And here is good old Wiki for you. They have a chart, up to 90 days in the hair. Eeek.
http://en.wikipedia.org/wiki/Drug_test

Answer 2

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The length of time cannabis metabolites may be detected, on average, on a standard urine screen is typically no longer than ten days for chronic users and between 3-4 days for infrequent users, according to a literature review published in the current issue of the journal Drug Court Review.

"Recent scientific literature indicates that it is uncommon for occasional marijuana smokers to test positive for cannabinoid [metabolites] in urine for longer than seven days" at 20 ng/ml or above on the EMIT (Enzyme Multiplied Immunoassay Technique) test, the author concludes. "Following smoking cessation, chronic smokers would not be expected to remain positive for longer than 21 days, even when using the 20 ng/ml cannabinoid cutoff."

When tested at the 50 ng/ml cutoff threshold, infrequent users typically test negative for the presence of marijuana metabolites within 3-4 days, while heavy users typically test negative by ten days after ceasing use, the study found.
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Answer 3

Clinton was worried that it was there for years. Once...probably not around anymore. It takes about 30 days to naturally work the traces out of your system. With some herbal tonics and alot of other hokey things, the cleanup can go faster.

Answer 4

not long at all maybe 1 week or 1 month, im no expert

Answer 5

anywhere from30-45 days

Answer 6

23 hours, it's time for another joint.