How long does weed stay in your blood

One of the leading questions among people exposed to the use of weed and who have an upcoming drug test is ‘how long does  weed stay in the bloodstream?’ Being able to get the answer to this question will help many occasion users know how to go about passing their blood drug tests. 

How long weed would remain in the blood varies from individual to individual. However, if you are a frequent user, you should expect weed to be detectable in your bloodstream months after use. 

THC may remain in your body for days or weeks after use, depending on your level of exposure. However, how long weed stays in the blood system hinges on a number of factors, including how fast your liver breaks down the THC, how high the amount of THC present in the weed, and your fat level, among others.

Even though cannabis has been legalized in most states, there is a need to carry out drug tests at intervals to maintain safety at the workplace and prevent an employer from working under the influence of psychoactive substances such as weed, pot, meth, etc. 

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This article will give insight into how long does THC stay in the blood system if you are an occasional or frequent user, how you can get it to leave your blood system, and habits that can help you get rid of THC in your blood system.

How Does Marijuana Affect Your Blood System?

Once the weed is consumed, the THC element enters the tissues where it is stored. Immediately after it has been absorbed into the tissue, it will be processed by the liver, which helps break down the THC. Upon completion of this process, the stored THC in the tissue escapes into the bloodstream while some are excreted as urine. However, in the case of heavy users, the excretion of THC elements in the body through urine is minute, and as such, the presence of THC can easily be detected in the blood.  

Detection Period of THC 

As early mentioned, how long marijuana stays in your blood depends on several factors. However, according to an estimate provided by the National Health Service, the detection window of weeds depends on the type of user. 

Type of user  Detection period  First-time or occasional user  3 - 7 days  Frequent user  10 - 15 days  Chronic user  1 - 3 months 

How Long Does Marijuana Stay in  Bloodstream?

The common knowledge is that THC will stay in blood for one to seven days, depending on how often you use the substance. This is why blood drug tests are usually used to screen for THC in the body because they can easily detect recently used cannabis. However, the detection window is quite short compared to drug testing methods such as urine and hair drug tests. 

It should, however, be noted that the presence of THC in the blood might persist for a period longer than 7 days after abstinence for a person who is a chronic user.  

Factors that Influence How Long THC Stays in Bloodstream 

As mentioned earlier, there are a number of determining factors that might influence how long weed is going to stay in your body.  These factors also include things you shouldn’t do after using weed. They include; 

1.  Exercise  

According to research, THC present in the body fat is released into the blood system during exercise. As a result, THC metabolism can be found in the blood during a drug test. This is why all forms of exercise should be suspended days before your drug test because it can increase the THC in your blood.

2. Hydration 

Proper hydration will go a long way in helping you flush THC out of your body. It is believed that regular dehydration can spike the THC level in your body once you have been exposed to the consumption of weed. Therefore, you should take enough water in moderation because excessive water consumption can result in water poisoning. 


3. Level of THC consumed 

This is one of the leading factors influencing how long marijuana lasts in blood. For instance, if you use weed regularly, THC metabolism will remain in your body for a period of more than the usual 7-days. This is because the THC level of a person who is a chronic user of cannabis will be higher than those of an occasional or frequent user. 

How can you determine the level of THC in Marijuana? 

In most cases, it is quite difficult to quantify the level of THC in marijuana unless a test is carried out in a laboratory. Therefore, most users measure the level of THC in a weed through consumption. By doing this, one can determine the strength of the THC from the level of ‘highness’ gotten from the weed. You should, however, note that this method is not totally dependable because other unknown factors can influence how ‘high’ you get. 

4. Body Composition 

When it comes to the body, factors such as body mass, gender, and age would also determine how long weed would stay in your blood. A good example of this is how fat stores up THC particles. A person with a lot of body fat would have difficulty breaking down the THC present in the body. THC will be transported into the bloodstream since it cannot be broken into the blood and excreted out of the body. 

It also takes a longer period for female users to metabolize the THC in the body than male users. The reason behind this is centered on the fact that females have higher amounts of fat than an average male. 

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How can you get marijuana out of your Blood system?

The easy solution is to quit using before your upcoming drug test. Once you have done this, you can find means to cleanse your body using quality detox products.  

Several detox products can help you pass your blood drug test by cleaning your blood of any THC residue. This does not mean that these products are 100 percent reliable. However, if you adhere strictly to the instructions on use and inculcate a change in habit, you can be guaranteed that they can help you pass your blood drug test. You can get these products on various e-stores such as Amazon, Walmart, eBay, etc.


Knowing how long weed stays in your bloodstream would give insight into how you can pass your blood drug test and the habits you need to suspend. 

THC residue can last in your bloodstream for up to 7 days. However, THC can stay in your blood for longer due to certain factors, such as how often you smoke and other habits. 

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