A member asked:

My father has cirrhosis and has lead to liver cancer he quit smoking weed in april but it still shows up in his system, how long does it take to leave?

6 doctors weighed in across 3 answers

He has not stopped: If he is having cannabis showing in his tests, either the tests are inaccurate or he is still smoking or doing pot in some other manner. Doctors may be prescribing this for him.

Answered 2/26/2016

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Dr. Kris Gast answered

Weed and cirrhosis: There is really no telling... His liver is basically scarred and not functioning like the filter it was meant to be. Drugs that have to be metabolized in the liver can float in the blood for long periods if the liver isn't breaking them down. It's ur bodies carberator.

Answered 1/13/2016

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Dr. Tracy Berg answered

Specializes in General Surgery

Concern for dad: You can support your dad and it is obvious you care for him. Changing your dad or understanding what he is or is not doing daily requires you be his caregiver. Marijuana use is detectable in standard urine drug tests for about 9 to 12 weeks after last use. Okay to ask your dad if he is under a doctor for its use.

Answered 7/3/2013

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