How Long Does Cannabis Stay in Your Blood?

Understanding how long cannabis remains detectable in the blood is crucial for individuals who need to know for legal, employment, or personal reasons. The detection window can range from a few hours to several weeks, depending on various factors.

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Factors Affecting Detection Times

  • Frequency of Use: Regular users may have detectable cannabis for a longer period than occasional users.

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  • Body Composition: Individuals with a higher body fat percentage may retain cannabis longer due to fat-storing properties of the drug.

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  • Metabolism: Those with a faster metabolism may eliminate cannabis from their system more quickly.

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Methods of Detection

Cannabis can be detected in the blood through various methods, including saliva, urine, and hair follicle tests. The type of test and its sensitivity can also impact detection times.

Common Detection Times

  • Saliva Tests: Usually detectable for up to 24-48 hours after use.

  • Urine Tests: Detectable for up to 3-30 days after use, depending on the individual.

  • Hair Follicle Tests: Detectable for up to 90 days after use.