Last Updated on August 30, 2023 by Team Spinfuel

How Long Does Weed Stay In Your System

  The gradual legalization of weed (marijuana) has brought about a significant increase in its accessibility and usage. This has raised questions about how long marijuana effects stay in a person’s body. Different people might have it in their system for different amounts of time. This depends on how often someone uses it, how fast their body processes things, and the test used to check for it.

This article’s primary goal is to help answer the question: How Long Does Weed Stay In Your System? By describing how the body processes marijuana and examining the different methods used to test for it, readers can get a good idea of how long it might be detectable.

With marijuana becoming legal in more places, it’s essential to have accurate information about how long it stays in the body, especially considering the popularity of weed edibles. This helps people who use it recreationally and those who might have to take drug tests for various reasons.

How Does Your Body Process THC?

THC, which stands for delta-9-tetrahydrocannabinol, is the primary substance responsible for the mind-altering effects of marijuana. When you consume marijuana, your liver breaks down THC into different byproducts in a significant process called metabolism. These byproducts, formed through processes like oxidation and conjugation, have other characteristics compared to the original THC. This complex metabolic change of THC significantly impacts how long and strong its physical effects last.

After this metabolic process, the resulting substances are mainly removed from your body through feces and urine. This process of getting rid of these substances is important for reducing the long-lasting effects of THC on the mind. Learning about how THC and its byproducts are broken down and removed from the body helps us understand how the body deals with this compound. Additionally, this knowledge helps explain why THC can still be detected in drug tests even after its immediate effects have worn off.

How Long Does Weed Stay In Your System?

THC, the primary psychoactive compound in marijuana, is characterized by a notably long half-life, which contributes to its expanded presence within the body. This prolonged half-life is attributed to THC’s lipophilic (fat-loving) nature, causing it to accumulate in fatty tissues throughout the body. Consequently, the elimination of THC takes longer compared to many other substances.

This extended duration of THC presence holds noteworthy implications, particularly in contexts such as drug testing and cases involving impaired driving. Residual THC levels can remain detectable in the body for several days or even weeks after use, depending on various individual factors.

Here are some average detection times on how long marijuana will show up.

Blood: Two hours to 12 hours

Hair: Upto 90 Days

Saliva: Upto 72 hours

Urine: Upto 30 Days

Blood Tests

The duration of THC’s presence in the bloodstream significantly impacts its detectability. For those who use it infrequently, the substance can be identified within the body for approximately 3-4 hours after consumption, and its metabolites can be traced for around 2-3 days. In cases of frequent usage, the detection window extends to about 4-8 hours after consumption, with metabolites potentially remaining detectable for up to two weeks.

Hair Tests

Hair testing can identify marijuana usage within a three-month span, proving more dependable for frequent users than occasional ones. Notably, a study revealed that 75% of heavy cannabis users self-reported accurately, and surprisingly, 39% of light users tested positive for THC in hair samples.

Saliva Tests

The mouth swab test involves collecting oral fluid to detect substances. This non-invasive approach provides insights into recent drug usage. Substances are absorbed into the bloodstream and eventually reach the oral cavity. This test holds potential for roadside testing due to its simplicity and quick results, aiding law enforcement in detecting impaired drivers.

Urine Tests

Urine stands out as the preferred method for THC testing due to its ability to retain concentrations effectively. This method’s reliability adds to its appeal, making urine tests a commonly used approach for detecting THC presence and frequency of use.

Factors Affecting How Long Weed Stays in Your System

To understand how marijuana shows up in drug tests, we need to consider different factors. Two key players are body mass index (BMI) and metabolic rate. Other important aspects include the strength of the marijuana, how it’s used (like smoking or eating), the amount taken, and how fast the body processes it. BMI, which relates to body composition, matters because more body fat might mean a longer detection time.

Metabolic rate affects how quickly the body breaks down marijuana and its components.

The strength of marijuana and how it’s used impact how much of it is in the body. Also, different people process things at different rates, which affects how long marijuana stays in the body. So, it’s a mix of all these factors that determine whether marijuana shows up in drug tests.

How to Get Weed Out of Your System

Acknowledging marijuana addiction involves understanding its diagnostic criteria. Some individuals seek quicker detox through supplements to enhance the natural detoxification process. Things like water, green tea, cranberry juice, and supplements are often suggested, but science doesn’t fully support their effectiveness. These detox supplements claim to help remove THC and its leftovers from the body. Yet, doctors say the best way to detox is to give it time—our bodies naturally get rid of these things over weeks or months.

Before trying detox, ask a doctor for advice. They’ll keep you safe and give trustworthy guidance.


How long does pure weed stay in your system?

The duration that pure weed, or the psychoactive compound THC within it, remains detectable in your system varies based on factors such as frequency of use, metabolism, and the type of drug test employed. Generally, THC can be detected in urine for around 1 to 30 days after use, in blood for about 1 to 2 days, in saliva for up to 1 to 3 days, and in hair for several months.

How long does it take to detox from weed?

THC may be cleared from the body for infrequent users within a week or two. However, THC can take several weeks or a few months for regular or heavy users to be entirely eliminated.

Can exercise and hydration help in detoxing faster?

Yes, regular exercise and staying hydrated can support the detox process by promoting metabolism and excretion, potentially reducing detection time.

Final Thoughts

Recognizing the importance of grasping marijuana detection and its implications is essential. A clear understanding of how marijuana affects the body and the mechanics of its detection enables users to make well-informed choices about consumption. By exploring the effects of marijuana and the duration it stays detectable, individuals gain insights to assess its benefits and risks. This knowledge promotes responsible use and equips users with awareness to navigate weed’s impact on the body’s energy overall health.