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How long does weed stay in your bloodstream

how long does weed stay in your blood stream

Weed also known as cannabis, marijuana or pot is a drug comes from a plant called cannabis sativa plant. The plant contains a chemical named as THC(tetrahydrocannabinol) , which produces a ‘High’ when someone smokes, or ingests.

Now, let’s talk about How long does marijuana stays in your blood stream? The amount of time marijuana stays in your bloodstream is depend on many factors:

  • The amount of THC in weed
  • Frequency of use 
  • Rate of metabolism 
  • Hydration
  • Body mass index(BMI)
  • Genetics 

More frequent use of THC tends to increase the amount of time it takes to eliminate THC and its metabolites from your system.

How long does THC stay in system

The time duration of detecting THC in blood is 12 hours,in saliva it is 24 hours after last use. If we want to detect the THC in hair and urine, they might have different time durations. THC is detectable for upto 90 days in hair, and 1 day or longer in urine. It depends on how often the individual uses it.

To understand how long does THC stays in your bloodstream , it is essential to know about the main drug tests.

How long does THC stay in your hair

Hair test is the common option to detect the marijuana in your bloodstream. The hair is tested in a lab to detect THC. THC reaches into the hair follicles through the bloodstream.  It is a long detection window , because the time duration of the hair test could be up to 90 days after your last use. 

If THC metabolites are stored in your hair, they will stay there until you cut your hair. THC can still be detected in new hair growth.

How long does THC stay in urine

Urine testing is one of the most common drug testing methods.  The detection windows may be vary depending on the amount of time after you use it:

  • Single use(one joint): 3 days
  • Moderate use( four times per week): 5-7 days
  • Chronic use( daily): 10-15 days
  • Chronic heavy use(multiple times per day): more than 30 days

You give a urine sample in a small bottle. The lab checks THC in your urine. As you use the weed, it metabolizes into metabolites. About 20% of the metabolites leave body through pee, while 80% are removed as feces. A urine drug test looks for the metabolites in pee.

How long does THC stay in your saliva

It is a drug test that uses a small amount of saliva with swab to detect the marijuana in your system. The detection time of THC, the part of weed that gets you ‘HIGH’ , can usually be seen in saliva for about 24 to 72 hours after you last used it. 

However , this can change based on how often you use marijuana. If you use weed alot, THC might stay in your saliva so longer. For occasional users, it might not stay as long.

How long does THC stay in your blood

Blood drug test is a short window detection method because it detects THC in blood more quickly than urine. It detects THC in the bloodstream up to two days after consumption. However , it is not as commonly used because THC cannot be detected in blood for as long as it can be detected in urine.

How weed detox from your system

Unfortunately, there is no method to get weed out of your body. However, strategies that may assist in removing weed from your body more quickly. The easier ways are to break down the body fat cells, speeding up THC metabolism in the liver, removing THC from the intestines, exercising, eating healthy diet, and drinking sufficient amount of water. These ways may help in speeding up the metabolizing of THC in the bloodstream and release THC for further excretion.

The weed detox process can be tough for people who are dependent on marijuana. In this case, they should visit healthcare providers for inpatient and outpatient programs to get out of this drug.  Addictive people should seek out a rehabilitation program or some form of therapy to help them recover.

Mechanism for processing THC in your body

When you take THC, it is absorbed into numerous body tissues. For example, it is absorbed in the brain, heart, and in fat tissues. THC metabolized by the liver into 11-hydroxy-THC and carboxy-THC(metabolites). 

Now, 65% of the THC gets excreted through feces and 20% removed through urine. The rest is stored in the body. The absorbed THC in the body tissues is released into the bloodstream, where it is metabolized by the liver.

The person who uses marijuana a lot, THC builds up in fatty tissues faster than it can be eliminated, so it can be shown on a drug test many days after using it.

Is there anything you can do to metabolize THC faster

There is no such way to catalyze the metabolism of THC. However, there are some strategies that may assist to clear it from your body more quickly.

  • Stay hydrated
  • Exercise 
  • Eat a healthy diet
  • Consider supplement
  • Therapy
  • Avoid Re-exposure 

Here are also some weed detox remedies to speed up metabolism such as herbal supplements(creatinine or vitamin B12) to mask the dilution.

How long does it typically take to experience the effects of marijuana

Effects appear 1-3 hours after smoking and ingesting marijuana in the body. 

Long-term effects include:

  • Feeling like time is moving differently
  • Decreased cognitive functions
  • Respiratory problems
  • Mental health issues
  • Mood changes
  • Critical thinking and solving problems
  • Trouble remembering things

 Some short-term effects can include:

  • Depression
  • Altered senses
  • Increased appetite
  • increased heartbeat
  • Restlessness
  • Difficulty concentrating


The duration of marijuana stays in your system varies based on factors like usage frequency and your body’s metabolism. THC can be detected in blood for up to 12 hours, in saliva for 24 to 72 hours, in urine for up to 30 days or more, and in hair for up to 90 days. There’s no quick way to remove THC from your system, but staying hydrated, exercising, and eating healthily may help. If you frequently use marijuana and struggle to stop, consider seeking professional help. Remember, understanding your body and the effects of marijuana is key to making informed decisions about its use.

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