A member asked:

I am due in 2 weeks and i was wondering even though i am no longer smoking pot how long does thc stay in a fetus's system?

5 doctors weighed in across 2 answers
Dr. Nikolaos Zacharias answered

Specializes in Maternal-Fetal Medicine

Long time in hair.: Marijuana crosses the placenta and has untold effects on the developing brain of the fetus. Nobody has studies these effects in detail, but they may not be severe. Thc can be detected in hair analyses from newborns weeks after maternal use.

Answered 2/6/2020

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Meconium: THC will be detectable in the newborn's feces, meconium. Stay off weed forever.

Answered 1/20/2020

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