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Highland, California
A 19-year-old female asked:

I smoked marijuana yesterday and my doctor told me to come in tomorrow to get some lab test done. will smoking effect my test?

1 doctor answer2 doctors weighed in
Dr. Richard Bensinger
Ophthalmology 53 years experience
No: Marijuana can be detected up to a week after smoking. So if your testing is a drug screen including marijuana, then yes - the test will be affected. But all other blood chemistries and blood element testing will be unaffected.

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Last updated May 13, 2015

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