A female asked:
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i stopped smoking marijuana at 28 weeks pregnant. i smoked atleast 2-3 joints a day. how long does it take to leave my unborn babies blood?

1 doctor answer
Dr. James Ferguson
46 years experience Pediatrics
Be prepared: It is good that you have stopped.Your job from now until past delivery is to abstain and hope you don't attract the attention of child & family services.When a kid under their watch presents for delivery we look at your urine, which would be clean, and the kids poo,not blood. The poo can retain evidence from the point it was created, and a sensitive test would show it from 28wks.
Answered on Jan 13, 2021

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