Home Lifestyle Weed: How Long It Stays In Your Body

Weed: How Long It Stays In Your Body

Marijuana, also known as weed, is a drug that contains a chemical called “Tetrahydrocannabinol” (THC). This is what makes people feel high and it can stay in the body for several days or weeks. It is also this THC that is assessed for in drug tests.

How long this chemical stays in the body varies among individuals and depends on many factors which include:

  • The body fat of the individual
  • The frequency of weed and tobacco consumption by the individual
  • What kind drug test was done
  • Sex (females more than males)

Unlike alcohol that completely disappears from the body in a few hours, weed stays much longer. THC is lipid soluble and so it binds to fat cells, increasing the amount of time it stays in the body. 

Time Frame for Weed Detection

  • Urine: Even up to 3-30 days after use, drug tests would still be able to detect marijuana in the urine.
  • Saliva: Drug tests would only be able to detect marijuana in the saliva for up to about 24 hours.
  • Hair: Drug tests that test the hair for weed are the most sensitive, as they most likely would detect marijuana if you took them. They could detect marijuana in the hair for up to 3 months after use.
  • Blood: Tests that check the blood for weed can only detect weed if it was taken within 3-4 hours before testing.

How to get weed away from the body faster

The basic principle to do this is either by reducing the concentration of weed in the body or by increasing the breakdown. Methods that might help to do either of these include:

  • Drinking a lot of water
  • Exercising (but this shouldn’t be just before a test as it may lead to a positive result)


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