Those who have used or been exposed to marijuana need to know how long it can last in their system. Even long after the high wears off, it can absolutely still show up in a drug test. Never assume that it has entirely worked its way out of your system after a few hours and you’re in the clear.
The truth is that different tests can detect marijuana for days or weeks. It could be as long as a month.
There are a few factors that help determine how long detection is possible, and it’s not always the same for everyone. A few examples include:
- Your weight, height and body fat content
- How much of the drug you use
- How often you use it
- The type of test that was administered and how sensitive it was
For instance, a person who uses marijuana on a daily basis has a far greater chance of testing positive a month later than someone who is just exposed once at a party.
What this means for you
This long detection time can be problematic, depending on the charges that you’re facing. For instance, perhaps you’ve been accused of causing a fatal car accident while high. If you test positive for marijuana, can the authorities really determine if you were high at the time? After all, even if you used it the day before, the high would be long gone, but you’d still fail the drug test.
If you find yourself facing complex charges like this, you must know about all of your legal options for your defense. Talk with an experienced attorney — before you talk to the police.