A 39-year-old member asked:
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How long or days does weed stay in a humans body?

1 doctor answer
Dr. Heidi Fowler
24 years experience in Psychiatry
Depends on use.: 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 marijuana can be detected 12 to 24 hours in blood. Regular use marijuana can be detected for 2 to 7 days in blood.Marijuana regular use detected in hair for months. Single use might not be picked up in hair.
Answered on Sep 14, 2013

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For testing purposes: It can show up in blood for 7 to 100 days (or more) for regular use and can show up for months in hair.
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