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How Long Does Marijuana Stay in the System?

Determining how long marijuana will stay in the system may be something you are interested in finding out about -if you are one who is subject to random drug testing as a condition of employment. Others who may be interested are those on probation or parole who are subject to court ordered testing as a condition of release.

While THC or cannabis gets into the bloodstream usually within 20 minutes, it will take considerably longer for it to be completed eliminated. That could mean a positive drug test up to 2 weeks after it has been used. Yet it could be eliminated in as little as 20 hours. It all depends on the type of THC metabolites that it contained. There are plenty of varieties of marijuana out there, and some are quite a bit more potent than others.

A person that uses marijuana on a regular basis though, may find it takes up to 30 days of no use for their system to be completely void of it. For those that use marijuana in large quantities on a regular basis, it could be up to 90 days of no use for the system to avoid detection of trace amounts of it. You can buy home testing kits that will show you if anything is still able to be detected or not.

If you are worried about a positive drug test then this could be a good way to find out what’s in store for you.

Metabolic Rate

Chances are you know someone that eats all the time but is thin and someone that doesn’t eat much but has some extra pounds. Each individual has their own metabolic rate, and that influences how long marijuana will remain in the system. The higher your metabolism happens to be, the faster all traces of marijuana can be removed from the system.

However, if you have a fast metabolism, it can also mean your marijuana high won’t be as effective or long lasting. This often results in more of it being used, thus slowing down the removal of it from the system.

Variables to Consider

There are plenty of variables though, that will affect how long marijuana will stay in the system. These variables mean that the time frame will be different from one person to the next. These variables include:

Different testing methods will also become a factor in the length of time the THC metabolites can be detected -and, how soon they might be detected.

In certain industries, such as the commercial driving industry, under the jurisdiction of the U.S. DOT, saliva drug testing has begun or may soon. THC or, cannabis metabolites can be detected in the so-called ‘oral fluids’ within minutes with a saliva test. In urine, two to five hours is required before the THC can be detected.

This is valuable when testing ‘for cause’ or ‘post-accident.’ The THC is detectable by this method for 24-48 hours. Using the urine sample, the substance is detectable for close to a week or much longer in some cases as set forth above.