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How Long Weed Stay in Your System: Urine, Saliva, Hair, and Blood


There is a question about how long weed stay in your system like urine, saliva, blood, and hair.

Marijuana can stay in your system for up to 12 weeks after you stop using it, and there are different levels of medical marijuana with varying effects.

Marijuana detection time chart

There are studies on how long THC lasts in your body and is detectable in urine and blood tests. The average detection time for marijuana is 38 days, as per a study conducted in 2009.

how long does marijuana stay in your system chart

  • Blood
    Marijuana can be detected in blood as long as 1 to 2 days after use. According to a study shown in, the amount of THC in a heavy or chronic user’s system can last up to twenty five days. Fast metabolizers clear marijuana quickly and infrequent users have shorter detection times than chronic users.
  • Saliva
    Marijuana is detectable in saliva for approximately (24 to 72) hours. Saliva tests may show false positives 5-10% percent of the time which could lead to innocent people being arrested if they are not aware of how long marijuana stays in their system. If you consume cannabis intermittently, you can typically detect cannabis in your saliva glands (24-72 hours) after consumption.
  • Urine
    Oral ingestion of edibles typically lasts for 5 days or less, while marijuana or cannabis detectable in urine for about a day or two after one has used the drug. Weed get out of your pee within three days If someone uses weed for the first time. According to study by MedlinePlus one of the most common type used for detection of weed is urine testing. Single-use can be detected for up to 3 days and chronic heavy use can be detected up to 30 days after last use.
  • Hair follicle
    Marijuana is detectable in your hair follicles for up to 90 days.

Ways to get weed out of your system

    • Lemon Juice
      Due to its acidic nature, Lemon Juice can detox your body and many experts believe that lemon juice can cleanse toxins efficiently.
    • Cranberry Juice
      To clean the Kidneys’ lymphatic system and intestine you can use a blend of cranberry juice and water. Dilute your urine with juice and before use make sure you do not have any cranberry allergies.
    • Apple cider vinegar
      Use apple cider vinegar to boost your metabolism. This drink is effective in THC detox and in removing other toxins from your body more quickly. It’s highly acidic so you shouldn’t drink it straight.

Terms of using weed and different frequency

The majority of women use cannabis the same way and the same amount regardless of their age group. However, there were differences in how much cannabis was consumed and how often it was used. Over a third of male cannabis users report using it daily or very frequently across all age groups, i.e., 38.6 (18-29) to 49.1% (30-49), with significant differences across ages.

No Terms Ways of Use Frequency
1 Shaman Joints, Blunts, Pipe, Bong 38.6 (18-29) to 49.1% (30-49)
2 Marijuana Joints, Blunts, Pipe, Bong 38.6 (18-29) to 49.1% (30-49)
3 NYC Diesel Joints, Blunts, Pipe, Bong 38.6 (18-29) to 49.1% (30-49)
4 Quebec Gold Joints, Blunts, Pipe, Bong 38.6 (18-29) to 49.1% (30-49)
5 White Widow Joints, Blunts, Pipe, Bong 38.6 (18-29) to 49.1% (30-49)
6 Cannabis Sativa Joints, Blunts, Pipe, Bong 38.6 (18-29) to 49.1% (30-49)

How THC is metabolized?

THC is metabolized through the liver in 3 different stages:

  1. Elimination half-life (The time it takes for one-half of the parent compound to disappear).
  2. Distribution half-life (The time it takes for one-half of an administered dose to reach equilibrium between plasma and tissues).
  3. Terminal half-life (The time it takes for the plasma concentration of the drug to decline by half).

These 3 stages have a combined half-life of 5 to 6 hours.

Factors that influence how long marijuana remains detectable

Three main factors are discussed here.

  1. Amount of THC consumed
    The effects of THC are cumulative, which means that someone who consumes more THC will test positive for a longer period of time.

    It will take less time for people to feel the effect of smoking or vaping weed than eating cannabis.

  2. Genetics
    Marijuana is detectable in the system for different lengths of time depending on several factors, including

    • The method of consumption
    • The quantity of THC consumed
    • How often you consume marijuana
  3. Frequency of use
    How long weed stays in your blood system depends on how often you use it. Heavy users can stay positive up to 90-days after last use, while regular users report positive drug tests 45-days after quitting.

Types of drug test

There are 4 types of drug tests: Blood, Saliva, Urine, and Hair.

  1. Blood Test
    The process of blood test usually takes 5 to 10 minutes. Having drawn enough blood, the technician will remove the needle and apply an adhesive bandage.

    Test Positive: Positive tests result from the presence of one or more drugs in amounts that indicate drug abuse or use. Positive tests must be followed up because they may be incorrect.

    Test Negative: After completely checking if you will get faint lines in the test window that means the test is negative. The presence of a test line, regardless of how light, indicates a negative result.

  2. Saliva Test
    Saliva drug tests can yield an accuracy of 99%. Saliva drug test detection times are approximately 5 to 48 hours.

    Drug test using saliva are more popular than urine tests because they are easier to administer. Mouth swabs are used to detect substance abuse.

  3. Test Positive: As soon as you finish checking the test window, if you get pink color, it indicates the presence of the analyte for which the test is specifically designed, and different devices are required to detect each class of drugs.

    Test Negative: The sample is considered negative for a drug if a pink or red line become visible under the drug name. If a test line appears under all drugs, the sample is considered negative for all drugs.

    Some people also swear by using Toxin Rid Rescue Wash Mouthwash, which helps to get THC out of your system in just 4 hours.

  4. Urine Test
    THC stay in urine for up to 30-days after use, depending on factors such as how often you use marijuana, hydration level, and urine acidity.

    Test Positive: An individual who receives a positive result on a drug test has exposed themselves to one or more drugs or substances that might have been misused or abused. A test of urine marijuana will be positive if the THC concentration is more than 50 ng/ml.

    Test Negative: A negative result indicates that no evidence of drug use was detected in the urine sample. This may be because the patient hasn’t used the certain drugs tested because the patient last used the drug outside of its detection window.

    The best way to clean your system for a urine drug test is by not using marijuana at all.

  5. Hair Follicle Test
    One of the most accurate drug tests is the hair follicle test. The test can detect usage up to 90 days after the last time it was used.

    Test Positive: A positive drug test result means that one or more drugs were found in quantities that suggest drug misuse. It is important to follow up on positive results since they may be incorrect.

    Test Negative: After the hair removal procedure, a negative result can be identified within 24 hours. Screening tests are performed using ELISA. Through this test, we verify that the hair samples do not contain drugs. If your result is negative, you haven’t used illicit drugs in the past 90 days.

How Long Does it take to Get Weed Out of Your System for a Drug Test?

When it comes to getting weed out of your system for a drug test, there are many things to consider. The first step is understanding the type of drug being tested for and then knowing your individual metabolism. Drug tests are different for every substance, so it’s important to know which one you’re taking.

If you’re asked to take a test of hair follicle, you’ll need to detox for three months before the results can be confirmed. Urine and blood tests are not as long-term, but they still require some time before all traces of the drug will be gone.

How Long Does it take Pot to Leave System for a Urine Drug Test?

The length of time that marijuana stays in your system varies depending on how often you use it, your weight, and other individual factors. However, the most common method of drug testing–urine tests–can detect marijuana in the bloodstream for up to 100 hours.

The average time that marijuana is detectable on a test is 5-65 days. For occasional users, marijuana will leave their system within 3 days. Moderate users will leave the system within 5 to 7 days. Chronic users can take up to fifteen days, and chronic heavy users can take more than thirty days.