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The amount of time required to pass a drug screening for marijuana depends on several factors, including your body fat percentage, your metabolism, and how much/how often you smoke, among other things. Delta-9 THC (the ingredient in Marijuana that they test for) is fat soluble, unlike many other drugs, and so:

a) drinking heavy amounts of fluids to flush your system will not work and

b) THC takes longer to be purged from your system than Cocaine, Amphetamines, or opiates.

In short, it could take you.anywhere from 5-90 days to show up completely clean for a urinary analysis, and longer for hair follicle samples and other tests. I am sorry that I lack a more direct answer--there are simply too many variables to give you a more accurate response.

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12y ago
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Q: Is twenty eight days long enough to pass a urine drug screen for marijuana?
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