How Long Does Cannabis Remain Detectable On A Drug Test?

How long does weed stay in your system? This question has different answers depending on how you are looking for the effects of cannabis. In other words, if you smoke weed with your friends tonight, you will be sober by the time you go to work tomorrow morning. All but the most naïve people know to abstain from smoking weed for several weeks before a scheduled drug test. If your workplace has random drug tests, though, you might be worried that the test will be wise to your most recent 420 adventures.

How Urine Tests for Marijuana Work

How long does one hit of weed stay in your system? Not very long, if by “weed,” you mean THC. Your body metabolizes THC almost immediately. Thus, it is only in your system for as long as you feel high.

As for how long does weed stay in your system for a urine test, the urine test is not looking for THC. Instead, it detects THC-COOH, a compound that your liver produces when it metabolizes THC. THC-COOH is stored in your adipose tissue (fat) before exiting your body through your urine. The less body fat you have, the more quickly you will get rid of the THC-COOH from a weed-smoking session. One study showed that it took between four and 18 days for THC-COOH to stop being detectable in the study participants’ urine.

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Can a Urine Test Detect Weed If You Only Smoked Once?

It can be difficult to measure how long does weed stay in your system if you smoked once. To test this, you would have to find people who only smoked once. Of course, most people who test positive for weed on drug screenings are habitual smokers. One study showed that how frequently you smoke affects how long THC stays in your system. The study participants who smoked infrequently had THC stay in their system for only two or three days. Meanwhile, the most frequent smokers had it stay in their systems for 9 to 12 days.

How Long After Smoking Can Hair Tests Detect Marijuana?

Hair tests for marijuana are controversial because they detect THC metabolites for a longer time. The tests use a sample of hair an inch and a half long. It is supposed to show whether the test subject has smoked weed in the last 45 days. The problem with those tests is that how long after smoking they can detect weed depends a lot on the person’s hair. The metabolites remain detectable much longer on thick and textured hair, especially the hair of people of African descent. Therefore, most drug screenings for cannabis metabolites use urine tests instead of hair tests.

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Do not let random drug screenings cause trouble for you at work. If you use cannabis to manage a chronic health condition, get a medical cannabis card. Your first stop should be MMJ Herb to get an evaluation for medical cannabis card eligibility.

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