A 55-year-old member asked:
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Is it actually true that cannabis will show up in a blood test?

1 doctor answer
Dr. Joyce Liporace
32 years experience in Neurology
Yes: Yes, in fact it can last for weeks after the exposure.
Answered on Jan 7, 2020

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Dr. Heidi Fowler
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THC: Thc metabolites may be tested for on a screening for illicit drugs.
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Only if testing for : It. It will only show up in the testing if they're looking for it.
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Cannabis: No, it will not show on routine blood testing panels
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