How Long Does Pot Stay in Your System?

Opinions are across the board on the length of time drugs stay in your system. Those who frequently use them say there are many ways to cheat a drug test and flush out your system within a day or two. Others say drugs can stay in your system for many, many months. But who’s right? How long DO drugs stay in your system? Is it really 30 days? Or is it 3? And can they simply be flushed out?

We did some homework, and here’s the consensus:

Drugs In Your System Depend On How Often and How Much

If you’re a chronic user, it’s not that easy to flush drugs out of your system. It’s said that traces of marijuana can be in your bodily fluids for months after use. (even up to 3 months or so…) How often and how much you smoke will radically impact your drug test results. A more casual user can expect evidence of use for a week or two… generally not more than 13-14 days.

Read more about how long marijuana stays in your system.

THC (the ingredient in marijuana) enters the blood stream immediately

Upon that initial high, the chemical THC will enter your blood stream. It might seem odd since it’s smoked orally, however this chemical rapidly enters the blood. That’s why hair and fingernail testing are good measures of if the drug has been used… both grow based on blood supply. Although THC hits the blood stream immediately, it’s actually metabolized quickly and doesn’t stay there very long. That’s why urine tests are actually one of the most popular (and affordable) ways to determine drug use… not blood tests. THC turns into metabolites when processed by the body and these metabolites are what’s detected on a drug test, particularly a urine test.

If you Eat it, It Still Shows Up

If you whip up some pot brownies, THC will still show up on a drug test, FYI.


Exercise may speed up metabolism, but won’t completely remove evidence of drug use.

Metabolism & Exercise Will Play a Factor

Traces of THC turn into metabolites and are flushed out through bodily fluids such as sweat and urine. The higher your metabolism, the quicker your body will flush out the marijuana chemicals being stored in your fat. Additionally, exercising and drinking water may also flush out THC quicker and reduce the amount of time evidence is stored within your cells. This may all apply when trying to pass a urine test, however the amount of water you drink and number of sprints you run won’t have any impact on traces of the drug showing up in your hair.

Best Way to Pass a Drug Test

Not to overstate the obvious here, but the best way to pass a drug test is to avoid using drugs. And we’re not just talking about a month before the test. If you’re trying to pass a test for a future job, your employer is going to want a drug-free employee. Not just at the date of hire, but throughout the duration of your employment. They may or may not require random drug screening even after you’re hired. Plus, they’ve got good reason to want you clean. Drug-using employers have more accidents, health issues and lack productivity. Don’t let drugs set you back from a successful career. Stop using today.

Unsure if you’ll pass the pre-employment drug test?

Walk-in to request a test for yourself to see if you’ll pass.


  1. This was really informative, I had no idea that pot could stay in your system for up to three (3) months after you had smoked. Thank you for sharing.


  1. […] Many employers know the statistic that the age group using drugs & alcohol most often also happens to be the age group most rapidly entering the workforce. Many employers are requiring drug testing on employees before they make the offer. Even if you don’t know for sure that the future employer will require a drug test, be on the safe side and avoid using drugs. And we mean before AND after you’re hired. If you’ve used in the past and are concerned about passing the test, read about how long drugs tend to stay in your system. […]

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