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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Does Weed Take To Be Completely Out Of The System?

i have to take a blood test and urine test to see if i have thyroid cancer because my mom has it and makes me get lab work done every three months. i smoked weed yesterday but i do not smoke everyday. will it show up in the test still?
                                                                 
                                                                 
Fri, 1 Jul 2016
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Addiction Medicine Specialist 's  Response
not unless they test for it. There is no reason to test for weed in someone who is being tested for marijuana and they problem WILL NOT TEST. If they did, the results vary. If someone smoked only once, the test would be positive for about 5 days. BUT with continual large marijuanas use, the breakdown of the marijuana builds up in the fat of th person (the breakdown problems are oily and sticky). They are detected sporadically for 3 moths after stopping.
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How Long Does Weed Take To Be Completely Out Of The System?

not unless they test for it. There is no reason to test for weed in someone who is being tested for marijuana and they problem WILL NOT TEST. If they did, the results vary. If someone smoked only once, the test would be positive for about 5 days. BUT with continual large marijuanas use, the breakdown of the marijuana builds up in the fat of th person (the breakdown problems are oily and sticky). They are detected sporadically for 3 moths after stopping.