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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Does Marijuana Stay In The Blood Stream?

Hi. I recently applied for a job that drug tests (UA). I ve been smoking steadily for the past year, between .5 to a little over a gram a day of medical marijuana. I m 18% body fat. My question is, I ve seen a good amount of testimonials online claiming positive urine tests well beyond 30 days and it s got me freaked out. What are my chances of testing positive after 3 weeks clean? 4 weeks?
Wed, 19 Sep 2018
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Internal Medicine Specialist 's  Response
Hi,

It may vary from person to person, amount of intake. Average time to clear it from your system is 30-120 days.

30-45 days can fail a urine drug test for THC. 60-75 days can fail for a marijuana blood test. Up to 90 days can fail for a hair follicle drug test looking for moderate to high THC levels.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Penchila Prasad Kandikattu,
Internal Medicine Specialist
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How Long Does Marijuana Stay In The Blood Stream?

Hi, It may vary from person to person, amount of intake. Average time to clear it from your system is 30-120 days. 30-45 days can fail a urine drug test for THC. 60-75 days can fail for a marijuana blood test. Up to 90 days can fail for a hair follicle drug test looking for moderate to high THC levels. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Penchila Prasad Kandikattu, Internal Medicine Specialist