Confidence votes 45.1K. If you only smoked once, then it shouldn't take more than 2 weeks to get clean, at the very most. Marijuana usually stays in your system for 2 to 6 weeks, or a month on average, but that is for regular smokers.If you only smoked once in your life, then 2 weeks should be plenty of time.onfidence votes 45.1K. If you only smoked once, then it shouldn't take more than 2 weeks to get clean, at the very most. Marijuana usually stays in your system for 2 to 6 weeks, or a month on average, but that is for regular smokers. If you only smoked once in your life, then 2 weeks should be plenty of time.
http://www.answers.com/Q/How_long_does_weed_stay_in_your_system_if_smoked_once_in_your_life
How long does marijuana stay in your system if you only smoked it once in the past 2 years? Someone who smokes occasionally-or for the first time-will  likely test positive for 1-3 days afterward, according to a review  by the  National Drug Court Institute (… NDCI). Well it usually takes up to a month for marijuana to get out of your system depending on how much you smoke and how rarely you smoke, but if it was your first time it sh … ould be cleared out within in two to three days just drink lots of water.
http://www.answers.com/Q/How_long_does_marijuana_stay_in_your_system_if_only_smoked_once
Approximate times, Cannabis (marijuana) can be detected through testing: Single Use: Blood Test: 2-3 days Saliva Test: 12-24 hours Urine Test: 2-3 days Hair Test: Up to 90 days, depending on how long your hair sample they use has been growing. Well it usually takes up to a month for marijuana to get out of your system depending on how much you smoke and how rarely you smoke, but if it was your first time it sh … ould be cleared out within in two to three days just drink lots of water.
http://www.answers.com/Q/How_long_does_marijuana_stay_in_your_system_if_only_smoked_once
If you're wondering how long marijuana stays in your system after smoking, it depends on how often you smoke. Light users -- those who smoke pot once in a while -- will have a negative drug screen after a marijuana-free week.f you're wondering how long marijuana stays in your system after smoking, it depends on how often you smoke. Light users -- those who smoke pot once in a while -- will have a negative drug screen after a marijuana-free week.
http://answers.webmd.com/answers/1182404/how-long-does-marijuana-stay-in-your-system
So if it takes your system 30 days to be clean of weed then your body will not start growing clean hair follicles until 30 days after you stop smoking pot! On average hair grows at a rate of .5 inches per month.mount of Marijuana Used. For a first time pot user, thc will remain detectable in the system for a period up to 7 days. For some casual weed user who have smoked weed 2-3 times each week, thc can be detectable for a period up to 21 days.
http://www.healthguidehq.com/how-long-does-weed-stay-in-your-system.html
We get this one a lot—how long does weed stay in your system if you smoked one time or how long does marijuana stay in your system if you smoked for the first time? According to a review by the National Drug Court Institute (NDCI) you’ll likely test positive for marijuana for 1-3 days after smoking weed.o one can really say how long you will test positive for marijuana, since the rate of THC metabolism varies per individual. But there are some common guidelines. According to experts at WebM, the amount of time marijuana stays in your system is anywhere from a week to a month, depending on how often you use it.
http://stuffstonerslike.com/2015/05/how-long-does-weed-stay-in-your-system/
THC: Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana – should be out of urine in 7 to 100 days. Single use marijuana can be detected 12 to 24 hours in blood.hc is stored in your fat, and stays there much longer if using daily like you are. If you stopped completely today, it would still detectable in urine for at least 100 days. Blood -- at least 7 days.
https://www.healthtap.com/topics/how-long-does-thc-stay-in-your-system-if-you-smoke-once
Get help from a doctor now ›. THC: Single use of marijuana should be out of your urine in 1 to 7 days. Regular use of marijuana – should be out of urine in 7 to 100 days. Single use marijuana can be detected 12 to 24 hours in blood. Regular use marijuana can be detected for 2 to 7 days in blood.hc is stored in your fat, and stays there much longer if using daily like you are. If you stopped completely today, it would still detectable in urine for at least 100 days. Blood -- at least 7 days.
https://www.healthtap.com/topics/how-long-does-thc-stay-in-your-system-if-you-smoke-once
How long does marijuana stay in your system of you smoked it once? Someone who smokes occasionally-or for the first time-will  likely test positive for 1-3 days afterward, according to a review  by the  National Drug Court Institute (… NDCI). Well it usually takes up to a month for marijuana to get out of your system depending on how much you smoke and how rarely you smoke, but if it was your first time it sh … ould be cleared out within in two to three days just drink lots of water.
http://www.answers.com/Q/How_long_does_marijuana_stay_in_your_system_if_only_smoked_once
Thc is stored in your fat, and stays there much longer if using daily like you are. If you stopped completely today, it would still detectable in urine for at least 100 days. Blood -- at least 7 days.Hair -- much longer (months).hc is stored in your fat, and stays there much longer if using daily like you are. If you stopped completely today, it would still detectable in urine for at least 100 days. Blood -- at least 7 days.
https://www.healthtap.com/topics/how-long-does-thc-stay-in-your-system-if-you-smoke-once
how long does weed stay in your system if you smoked once
A weed stay in your system up to 7 days if you smoked once. If you smoked once, the wees stay in your system for up to 7 days.