Less than 15 days.
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The length of time that secondhand pot smoke can be detected in your system varies depending on factors such as the amount of exposure and the sensitivity of the testing method. Generally, it can be detectable for a few hours to a few days.
Yes, cannabis can be detectable in your system even if you haven't smoked it recently. It can be stored in fat cells and slowly released back into the bloodstream over time, leading to a positive drug test result.
After 90 days of abstaining from cannabis use, if you smoke just once, THC can still be detected in your system for up to 30 days, depending on various factors such as metabolism, body fat percentage, and frequency of use.
There is no such thing as a "contact high". 95% of the THC in Marijuana smoke is absorbed into the lungs withing 5 seconds. The remaining 5% is not enough to get you high, or show up on a drug test. Unless you've smoked it yourself, you're fine.
The presence of secondhand marijuana smoke in your system is dependent on various factors, such as the concentration of THC in the air, duration of exposure, and your body's metabolism. Typically, traces of THC can be detected in blood and urine for up to a few days to a few weeks after exposure.
THC, the psychoactive component in marijuana, can stay in your system for up to 30 days after heavy, prolonged use. Factors like metabolism and body composition can affect how long it remains detectable. Chronic users may have traces detectable for longer periods.