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How Long Does Weed Stay in Your System?

Every seasoned smoker and new smoker has asked this question at least once in their life. How long does weed stay in your system? Is there anything you can do to speed up detox or pass a drug test faster? Many variables play a role in how the human body processes THC, and there is no right answer for everyone. However, the following information should help you make an informed decision on the best way to detox from THC.

There are several types of drug tests designed to detect THC. Many of these tests also test for drugs like cocaine, methamphetamines, barbiturates and phencyclidine (PCP) and are used by employers or law enforcement. Knowing what kind of test you need to pass will help you develop the best course of action for cleanse your system of THC.

Urine sample

Urinalysis is the most common method of drug detection. Employers often use it if an employee is suspected of using drugs in violation of company policy or as part of a pre-employment drug screening. The detection window varies widely depending on how much weed someone is consuming.

A light or infrequent user who only smokes weed a few times a week can detox from THC in just a few days. Someone who smokes weed several times a week may need ten to twenty-one days to have a urinalysis. Chronic daily users may take a month or more to completely eliminate THC from a urine sample.

It is important to note that there are other factors affecting these results. Learn more about detection time factors below.

blood sample

Blood tests are much more invasive than urine tests. For this reason, it is not often used by employers to determine drug use. Cannabis enters the bloodstream within moments of inhalation, peaking around three hours after use. However, it is rapidly distributed to brain and body tissues before being reabsorbed into the bloodstream.

A blood test detects THC for a few hours to a few days. There are rare cases where blood tests detect THC for a few weeks, but this is only intended for chronic, daily users.

Saliva sample

Saliva testing is growing in popularity as a non-invasive way to test drugs yourself at home or for an employer to test staff on-site. It is cost effective and 97% accurate. To administer a saliva test, simply dab the insides of both cheeks several times to collect a sample and insert the spongy swab into a test solution. A color change on the test panel indicates a positive or negative result.

Light or infrequent users will test positive for THC for only one to three days. However, chronic heavy users may fail a saliva test for several weeks.

Hair follicle sample

Hair follicle test can detect THC for up to 90 days after last use. When THC is broken down, the metabolites enter the hair shaft via tiny blood vessels. Since THC is inside the hair shaft, it can be difficult to simulate this type of drug test. Shaving your head is not an appropriate option, and the only way to pass is with a hair follicle shampoo.

Once you know the type of test you need to pass, you can consider additional physical and lifestyle factors that contribute to your ability to pass. Every person is different, and no one processes and detoxes cannabis in exactly the same way. Having a good understanding of the most critical influences can help you find the best plan of attack before your test.

Weight and BMI

Once THC is depleted in the organs and tissues of the body, it turns into a non-active metabolite. These metabolites end up in fat cells, where they reside until metabolized by fat burning activities or exercises. Then they are released into the bloodstream, where they eventually pass out of the body via feces or urine.

Since THC metabolites are stored in fat cells, people with a high body mass index (BMI) tend to detox more slowly than people with a lower BMI. The amount of body fat plays an important role in how long it takes to get rid of THC completely.

To help speed up the process, consider adding new or additional fat burning exercises to your daily routine.

Dosage and frequency

We’ve talked about detection times for light, moderate, and heavy users, and there are still a lot of variables to consider. For example, it can be assumed that someone who smokes weed every day will take longer to detox than someone who only smokes once a week. However, the type of cannabis and its potency also affect detection time.

Consider a vaporizer pen which contains 85% THC. Compared to a joint that only contains 20% THC, it’s safe to assume that two people can smoke the same amount on the same schedule, and the person who chose the vape pen over the joint will have more THC in their system.

The same theory applies to cannabis infused edibles. For example, many gummies and baked goods are infused with highly concentrated hash oil, which contains a higher potency of THC than just smoking a bowl.

Now that you know a little more about testing methods and detection factors, you can figure out what you need to do to pass your next drug test.


A natural detox is a great approach if you have a lot of time before a drug test or if you’re just looking to cleanse your system. Give yourself three to four weeks to detox and follow some essential rules. First, drink plenty of water to keep your body healthy and hydrated and eliminate THC through urine.

Next, modify your diet to include more antioxidant-rich fruits and vegetables and avoid foods that slow digestion and detoxification. This includes alcohol, sugar, wheat, fried foods, caffeine, and red meat. Stick to lean meats and a plant-based diet. Also, make sure you get enough sleep and sweat to increase your metabolism and burn THC-containing fat cells.

Detox programs

When time is not on your side, opt for a detox kit to help clean your system of all contaminants. This combination of supplements and dietary guidelines will help you detox in five or ten days, depending on your toxicity level and testing schedule.

Detox Drinks

A drug test the next day (or even the same day) can seem like a worst-case scenario. However, a detox drink can save the day. Formulated to work in as little as 90 minutes with results lasting up to six hours, it’s worth keeping one on hand for emergencies.

How long does weed stay in your system? Unfortunately, there is no surefire way to determine how long it will take you to detox from THC. keep one kit or drink at your fingertips, and you’ll never have to worry about it. Follow the instructions, contact their customer support team if you have any questions, and keep pulling the good stuff.

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