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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Will Marijuana Remain In The System?

Will marijuana show up in my blood work? I smoked weed tonight and I have blood work in the morning. I am getting a Lipid Panel test done along with a CBC w/Diff-Hgb, Hct, WBC, RBC, Plt, Diff. Also, will the marijauan cause the test to give any false readings?
Wed, 6 Jan 2016
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Dentist 's  Response
Hi Dear,

Welcome to HCM.

Understanding your concern.

As per your query you had marijuana, detection of marijuana depends on many factors such as drug potency, tolerance, fluid intake at time of test, method and frequency of marijuana use and body metabolism.As for being detectable in a drug test, well this depends on the type of drug test. Urine test will detect up to a month prior but a blood test will show positive you had marijuana in the last 6 months. You are one times user the marijuana will stay for around a week or two. If you are regular user then marijuana goes in to fat tissues and stay there for longer period of times . Th time can be different for different person. Approximate time for which marijuana can stay in regular user is one and half to two months . So there are chances that test will show positive result .

Hope your concern has been resolved.

Best Wishes,
Dr. Harry Maheshwari
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How Long Will Marijuana Remain In The System?

Hi Dear, Welcome to HCM. Understanding your concern. As per your query you had marijuana, detection of marijuana depends on many factors such as drug potency, tolerance, fluid intake at time of test, method and frequency of marijuana use and body metabolism.As for being detectable in a drug test, well this depends on the type of drug test. Urine test will detect up to a month prior but a blood test will show positive you had marijuana in the last 6 months. You are one times user the marijuana will stay for around a week or two. If you are regular user then marijuana goes in to fat tissues and stay there for longer period of times . Th time can be different for different person. Approximate time for which marijuana can stay in regular user is one and half to two months . So there are chances that test will show positive result . Hope your concern has been resolved. Best Wishes, Dr. Harry Maheshwari