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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Will It Take To Remove The Weed Completely From The System?

i have been smoking weed since i was 15 a few times a day,i am 19 now and have been clean for almost 4 weeks,in 2 to 3 days will be my 4 week mark,i am concerned about if i am going to be clean because i have an interview for magic mountain tomorow,i dont think ill be tested exactly tomorow but i really want to make sure,last week i walked into a room were my friends were smoking and then walked out because i was scared it would get into my system,i really need this job so i want to kno if i am going to be ok
Fri, 3 Jul 2015
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Addiction Medicine Specialist,  's  Response
Second hand marijuana smoke has repeatedly been shown NOT to show up on urine tests. However, chronic marijuana smokers can test positive for over 3 months after quitting BUT the positive results are highly variable ... the same person can be positive , negative, then positive as the metabolites come out of fat deposits. The study demonstrating this didn't tell the weights of those who tested positive the longest. It was less than 50% who were positive at 1 month and the results were not complete... they didn't have urines on all participants. It was a really small study. One way to predict is to test yourself before the interview. The best test is from a lab but over the counter tests can also be used.
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How Long Will It Take To Remove The Weed Completely From The System?

Second hand marijuana smoke has repeatedly been shown NOT to show up on urine tests. However, chronic marijuana smokers can test positive for over 3 months after quitting BUT the positive results are highly variable ... the same person can be positive , negative, then positive as the metabolites come out of fat deposits. The study demonstrating this didn t tell the weights of those who tested positive the longest. It was less than 50% who were positive at 1 month and the results were not complete... they didn t have urines on all participants. It was a really small study. One way to predict is to test yourself before the interview. The best test is from a lab but over the counter tests can also be used.