How Long Does Cannabis Stay in Your System? What Elements Influence how Long It Remains in Your System?

Cannabis, popularly known as weed, can typically be found 1 to 30 days after the last usage in human fluids. As with other substances, it may be visible in hair for several months trusted Source, especially in users of cannabis who use it frequently.

The frequency and amount of cannabis consumption affect the detection windows. Longer detection times are generally linked to greater doses and more frequent use. Cannabis can be detected for several months when used regularly. Trusted Source following the last usage. The detection times for cannabis in urine, blood, saliva, hair, and more are described in the following paragraphs.

How long is it detectable via drug testing?

The chemical compound THC, or delta-9-tetrahydrocannabinol, is one of the most prevalent substances in cannabis.

THC and its metabolites are measured in drug testing. Long after the effects of cannabis have subsided, these metabolites are still present in your body.

Depending on how much you consume or smoke, as well as the kind of drug test performed, pot can remain in your system for a variety of lengths of time.

The most popular way to test for drugs is through urine Trusted Source. According to a 2017 review, marijuana may be detected in urine for the following amounts of time following last use, though detection windows may vary.

How Long Does Cannabis Stay in Your System?

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single use: 3 days

four times each week): moderate use: five to seven days

10 to 15 days for chronic use (daily)

chronic heavy use: more than 30 days, numerous times daily

Because cannabis metabolites are fat-soluble, they can bond to bodily fat molecules. Since you may have more fat molecules in your body, it may take longer for them to leave your system. Blood tests are frequently used to identify recent cannabis use, or use that has taken place within the last 2 to 12 hours. It has, however, been found in situations of severe use 30 days after the last use, according to a reliable source. The amount of time it may be detected is extended by chronic high consumption.


Saliva testing has a limited window of detection, and in some situations, Trusted Source may be able to identify cannabis use from the previous day.

How Long Does Cannabis Stay in Your System?

In an oral fluid of frequent smokers, THC was still discernible 72 hours after usage, according to a 2020 study. After acute use, THC may be more easily found in oral fluid than in blood. Smoking and being around smoke might cause the weed to enter the saliva. But only after smoking or ingesting cannabis are its metabolites seen in saliva. Oral fluid is acceptable for use in roadside testing in jurisdictions where marijuana is prohibited.


Drug use for up to 90 days can be determined by hair follicle tests.

reliable source Following use, cannabinoids enter the hair follicles through tiny blood vessels, perspiration, and sebum that surround the hair shaft. Given that hair grows at a rate of 0.5 inches each month, a 1.5-inch hair segment pulled close to the scalp can reveal a 3-month window of marijuana use.

How Long Does Cannabis Stay in Your System?

How long does it take to metabolize (decompose)?

When someone consumes or smokes marijuana, THC enters the bloodstreamTrusted Source. THC is broken down in the liver and some of it is momentarily stored in fatty tissues and organs. There are more than 100 metabolites, but THCCOOH and 11-OH-THC (11-hydroxy-delta-9-tetrahydrocannabinol) are the two most important ones (11-nor-9-carboxy-delta-9-tetrahydrocannabinol).

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What elements influence how long it remains in your system?

How long marijuana stays in your system depends on a variety of variables. Body mass index (BMI) and metabolic rate are two examples of these variables that have less to do with the medicine itself and more to do with how it is processed and metabolized by an individual’s body. Marijuana use and other factors are related. The dosage, frequency, mode of administration, and strength of the cannabis are all factors in this.

Higher THC content marijuana may also be more strong and stay in your system for longer. Additionally, swallowed pot may stay in your system a little bit longer than smoked weed. Trusted Source

It usually takes longer for you to get rid of marijuana from your system when you consume it more frequently and at higher doses.

Can you do anything to help it metabolize more quickly?

You can’t really do anything to hasten the process by which THC metabolites leave your body.

Your body needs time to break down THC once it has been ingested. Although not significantly, exercising, eating well, and drinking enough water can all help. On the internet, you can get cannabis detox kits and cures. Many call for you to drink a lot of water in order to dilute your pee, and then use herbal supplements like creatinine or vitamin B12 in order to cover up the diluting.

How Long Does Cannabis Stay in Your System?

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How soon can you expect to experience the effects?

Almost instantly after consuming marijuana, its effects start to show. When marijuana is used, the effects may not become fully apparent for 1 to 3 hours. A “high” is produced by THC, the main psychoactive ingredient in cannabis. A few frequent outcomes are: changed perceptions, especially time perception

  • alteration of mood
  • trouble thinking and solving problems
  • memory impairment
  • false beliefs or hallucinations (when taken in high doses)
  • Other immediate impacts are:
  • focus difficulties
  • elevated appetite
  • issues with coordination
  • sleepiness
  • restlessness
  • swift heartbeat
  • eyes and mouth are dry
  • confusion
  • feeling weak or ill
  • fear or suspicion

How long does it take for the effects to wear off?

After one to three hours, weed’s immediate effects start to fade.

How long chronic consumption has an impact is unknown to researchers. Days, weeks, or months after ceasing to use marijuana, long-term effects may still be present. Some impacts can last a lifetime.