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  • Christoper D.

How Long Does Marijuana Stay in Your System?

Weed, also known as marijuana, is a commonly used drug that is becoming increasingly legalized across the world.

One question that many people have is how long does weed stay in your system? The answer to this question is not straightforward, as there are several factors that can affect how long weed stays in your body.

In this article, we will explore how weed affects the body, the factors that can impact how long it stays in your system, and how long it can be detected in various bodily fluids and tissues.

How Does Marijuana Affect the Body?

Weed contains compounds called cannabinoids, which interact with the body's endocannabinoid system to produce various effects. The main psychoactive cannabinoid in weed is delta-9-tetrahydrocannabinol (THC), which is responsible for the "high" that users experience.

When weed is smoked, THC is rapidly absorbed into the bloodstream and carried to the brain, where it binds to cannabinoid receptors and produces its effects.

In addition to producing a high, weed can also have other effects on the body, such as increasing heart rate, impairing cognitive function, and causing dry mouth.

These effects can last for several hours after use, but the duration and intensity can vary depending on several factors.

Factors That Affect How Long Weed Stays in Your System:

The amount of time that weed stays in your system can vary depending on several factors, including:

Frequency of use:

People who use weed frequently are more likely to have detectable levels of THC in their system for longer periods of time.

Method of use:

Different methods of using weed, such as smoking, vaping, or edibles, can affect how long it stays in your system.


Higher doses of THC are more likely to produce detectable levels of the drug in the body for longer periods of time.


The rate at which your body metabolizes THC can vary depending on factors such as age, gender, and overall health.

Body fat percentage:

THC is fat-soluble, which means that it can accumulate in fat cells in the body. People with higher body fat percentages may have detectable levels of THC in their system for longer periods of time.

How Long Does Weed Stay in Blood?

THC can be detected in blood for a relatively short period of time, typically between a few hours and a few days after use.

However, this window can be longer for heavy users or people who use high doses of THC. Blood tests are typically used to detect recent drug use, such as in cases of driving under the influence.

How Long Does Marijuana Stay in Urine?

THC can be detected in urine for a longer period of time than in blood, typically up to 30 days after use for heavy users.

Occasional users may have detectable levels for only a few days after use. Urine tests are commonly used to detect drug use in the workplace and in other settings.

How Long Does Marijuana Stay in Hair?

THC can be detected in hair for the longest period of time, typically up to 90 days after use. Hair tests are less commonly used than blood or urine tests, but they can be used to detect long-term drug use.

How Long Does Marijuana Stay in Saliva?

The amount of time marijuana stays detectable in saliva depends on several factors, including the amount and frequency of use, the potency of the marijuana, and individual differences in metabolism.

In general, THC can be detected in saliva for up to 72 hours after last use, although heavy or frequent users may test positive for up to a week or more.

It's important to note that saliva tests are often used in roadside drug tests, and they can detect marijuana use within a few hours of last use, making it a more immediate method of detection compared to blood or urine tests.

Get Your Medical Marijuana Card in Minnesota

Do you have a qualifying condition for a medical marijuana card in the State of Minnesota? If so, what are you waiting for? It is now easier than ever to get your medical card through telemedicine, right from the comfort of your couch!

Have a chronic condition? You probably qualify! Do you feel like you may benefit from medical cannabis in general? You probably qualify!

Minnesota’s medical marijuana program is fully up and running, and we will begin seeing patients very soon! You should reserve your appointment as soon as possible to make sure you will not have to wait any longer for the relief you deserve.

Cannabis is a safe, natural medicine that has been used for thousands of years. Starting July 1st, medical marijuana will officially be legal in the State of Minnesota, so you should do what you can to prepare so you can have legal access to your medicine!

Reserve an evaluation online today with one of our compassionate doctors, and we’ll book an appointment for you just as soon as we’re cleared to. We will begin seeing patients in the near future, so make sure to reserve an evaluation right away!

You’ll meet with your doctor virtually, using your smartphone or computer for a telemedicine appointment. Together you’ll discuss your conditions, what medical marijuana might be able to do for you, and if you’re qualified to receive a Minnesota Marijuana Card, all without even leaving your home. You’ll even save $25 off the cost of the evaluation!

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