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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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Would Background Cannabis Smoke In Closed Environment Show Up In Urine Test?

Hi, I am due to attend occupational health for a urine test as part of a recruitment process in 7 days, I have recently been in the company of people who smoke cannabis (I dont smoke it). Would background cannabis smoke in a closed environment show up in a urine test? Even in trace amounts? Thanks.
posted on Fri, 14 Mar 2014
Twitter Tue, 29 May 2018 Answered on
Twitter Sat, 23 Jun 2018 Last reviewed on
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General Surgeon,  's  Response
Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.

* The answer to this question depends upon the type of smoke, its concentration, duration of exposure and other host factors.
* It can show up in the system in some of the cases upto 30-60 days duration.

Hope I have answered your query. Let me know if I can assist you further.
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General & Family Physician,  Dr. Olgeta Xhufka 's  Response
Hello and welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.

I think the outcome of urine analysis for cannabis traces depends on how long you have been a passive smoker. It can show small traces of cannabis.

Hope I have answered your query. Let me know if I can assist you further.
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Would Background Cannabis Smoke In Closed Environment Show Up In Urine Test?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. * The answer to this question depends upon the type of smoke, its concentration, duration of exposure and other host factors. * It can show up in the system in some of the cases upto 30-60 days duration. Hope I have answered your query. Let me know if I can assist you further.