How Long Does Weed Stay in Your Urine?

By Lukas W, Herb.co

How long does weed stay in your urine?

There are lots of different ways to test for traces of cannabis in a person’s system. Urine testing is by far the most common method of drug testing, especially by an employer. These samples are often collected on-site and then sent to a laboratory to be tested. THC can also be detected in hair, saliva, and blood. Since urine is the most common method of testing, how long after you smoke cannabis will THC be found in your urine?

It all depends on how much you smoke

One of the pitfalls of testing for cannabis through urine samples has to do with the exact chemical that is being tested for in the lab. The test doesn’t actually look for pure psychoactive THC, but rather the version of THC that has been processed by your body, called THC- carboxylic acid (COOH).

This leads to people testing positive for cannabis use long after they have consumed cannabis. And depending on your usage habits, it can be months after you stop and you will still test positive in your urine samples.

Fair testing

Researchers have found that everybody’s body metabolizes THC in slightly different ways. But, they still came out with a rough guide; on how the majority of people’s urine will test based on different consumption styles and timeframes.

  • Your first use will usually stay in your system for 5-8 days
  • If you use cannabis 2-4 times per week and then stop, you’ll test positive for 11-18 days
  • If you smoke 5-6 times per week, it’ll stay in your urine for 33-48 days
  • For Medical cannabis patients and people in the #smokeweedeveryday club, THC-COOH will stay in your urine for 49-63 days

For veteran smokers who have smoked for decades; they were even found with THC-COOH in their urine a whopping 77 days after stopping. That’s over two months!

These kinds of long-lasting positives can be a big problem for people who need to stop in a shorter time frame. They could have easily followed the rules of no cannabis use, but when tested, they still test positive.

The fairest tests that should be utilized worldwide is with the saliva, as THC will exit your saliva a mere 12 hours after use.

How Long Does Marijuana Stay in the System (with Infograph)

Below is an infograph detailing how long marijuana stays in your system.

The data used to create this infographic is gathered from research on drug testing methods and the information presented by drug screen manufacturers. Some resources include Redwood Toxicology, Cannabis Drug Testing, California NORML. The information presented is only a guide or estimate since drug testing has many variables that can influence a positive or negative outcome.

How Long Does Marijuana Stay in your System? is a frequent question posed by cannabis consumers. While there is no definitive answer, below are some guidelines. The only way to really know if you are positive is to test yourself. You can test yourself with a cheap drug test and know if you are positive.

How long does THC stay in your system?

The most common drug tests used are urine, saliva and hair. Each test has a different detection time which is important to know. The urine drug test is the most commonly used because it is cheap and has a longer detection time than a saliva test. There are several very important factors that can influence how long THC will be present in your urine:

  • Weight
  • Body Fat
  • Amount Used
  • Frequency of Use

Since these factors will vary greatly for each individual, there are no definitive guidelines to tell you how long you can test positive for THC.

On a Urine Drug Test, THC will appear as a positive within 2-5 hours of use. How long it will still show on a urine drug test is estimated based on frequency of use, but does not take into account the weight and body fat of the marijuana user:

  • One Time User may show positive for 1-6 days
  • Moderate User may show positive for 7-13 days
  • Frequent User may show positive for 15 or more days
  • Heavy User may show positive for 30 or more days
  • Some Heavy Pot Smokers have reported being positive 45-90 days after quitting

On a Saliva Drug Test, THC will test positive within one hour of use, but may only show positive for about 12 hours after last use.

On a Hair Drug Test, THC will show up about 7 days after use and most hair drug tests will test for a 90 day period. However, THC does not always bind to the hair follicle which makes it not always considered an accurate testing method for marijuana use.

The most reliable way to know if you are testing positive for marijuana use is to drug test yourself.

And now for the infograph:

how long does weed stay in your system

Source: HomeHealthTesting.com

Marijuana Drug Test: How to Pass

How long does marijuana stay in your system, particularly your urine? And how do you pass a marijuana drug test? Here’s a look at what the science says.

marijuana drug testWhen conducting a marijuana drug test, companies often use a urine test. There are several factors that determine how long weed stays in the urine.

Here are a few:

  • THC percentage of the cannabis being consumed
  • The BMI of the person consuming the marijuana
  • The rate of consumption (how often they smoke)
  • How fast the consumer’s metabolism works

 

With this in mind; here’s what the research shows in regards to how long marijuana stays in your urine:

  • If you consume marijuana once, it should be out of your system in 5 to 7 days.
  • Cannabis will stay in the system for 10 – 20 days for those who consume it a couple or a few times a week.
  • For heavy consumers (5 or more times a week) it can stay in the system for 30 to 65 days.

 

THC-COOH:

THC-COOH is the main secondary metabolite of tetrahydrocannabinol (THC) which is formed in the body after cannabis is consumed. Most drug tests don’t test for THC; they test for THC-COOH.

The reason this is an issue is because THC-COOH can stay in the body for longer than THC.

Click here for more information on THC-COOH.

 

Saliva and Hair Tests:

Two other popular methods are saliva tests and hair tests. Saliva tests are the least invasive; if you’re a daily smoker, studies have shown that in most instances it should be completely out of the system after 72 hours. If you smoked cannabis only once, it will likely be out of your system in 24-48 hours.

air tests, on the other hand, are far more invasive. Cannabis can be found in the hair up to a year after last consumption. Many companies have stopped using hair drug tests, however. Part of this is due to research released last year which found that hair tests can have false-positives for marijuana “because of transfer through cannabis consumers, via their hands, their sebum/sweat, or cannabis smoke.”

 

How do I Pass a Marijuana Drug Test?

The safest and most effective way to pass a urine drug test for marijuana is to abstain from consuming it; if you’re a heavy smoker, this may mean abstaining for two months or more.

Another option is to do a Google search for “marijuana detox” or “drug testing detox”. Here you will find a plethora of options for cleaning your system and clearing your urine; we highly recommend reading reviews first, however, as some work much better than others.

Another option is to dilute the marijuana in your urine by drinking massive amounts of liquid. This may work to shorten the amount of time the THC is in your system. However, it’s not magic and won’t allow you to pass a test if you’ve smoked recently.

If taking a marijuana saliva test, abstaining for a few days should be enough for even heavy users. If you can only abstain for a day or two prior to the test; suck on the sourest candy you can find for a couple hours beforehand.

If taking a marijuana hair test, there really isn’t much you can do, unfortunately.

 

What about CBD Consumption?

Standard drug testing tests for THC metabolites, not CBD. This means that consuming CBD will not make you fail a drug test; that is so long as it has had all of its THC removed; or if it’s hemp derived (meaning it will already have virtually no THC).