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how long does weed stay in your system chart

A female asked:
Dr. Charles Glassman
35 years experience Internal Medicine
Marijuana in Body: The active ingredient in marijuana is THC. The half-life (meaning how long it takes for 1/2 of it to "disappear") is about 20 hours. It can settle in ... Read More

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A 29-year-old male asked:
Dr. Robert Killian
27 years experience General Practice
Bad News: Marijuana or cannabis can be tested positive for months after one stops using it. Most modern tests can also now discover attempts to 'cover up' or 'c ... Read More
A 45-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
Guess that depends: On how much weed you didn't inhale. Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana – should be out of u ... Read More
A 51-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
Detection: Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana – should be out of urine in 7 to 100 days. Single use mar ... Read More
A 39-year-old member asked:
Dr. Carla Enriquez
49 years experience Pediatrics
Depends on use: The half life of mj & its metabolites is very long. Depending on duration and amount used could be detectable in urine for 30 days and hair for one y ... Read More
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A 47-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
Detection: Single use of marijuana should be out of your urine in 1 to 7 days. Single use marijuana can be detected 12 to 24 hours in blood. Single use might no ... Read More
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A 39-year-old male asked:
Dr. Pamela Pappas
41 years experience Psychiatry
No studies: I could not find any studies of the pharmacokinetics of this herb, so we really don't know the answer to your question. When used, it's taken 2-3 tim ... Read More
A 37-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
That depends on : How heavily you smoke and how long you have smoked for. In a regular user it can be picked up through testing for months.
A 55-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
THC: Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana – should be out of urine in 7 to 100 days. Single use ma ... Read More
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A 46-year-old member asked:
Dr. Shariq Refai
12 years experience Psychiatry
Depends on use.: Marijuana is not what is detected but the active compound thc is. It depends on how often you use it. If you used it only once it can be detected by b ... Read More

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