How long does meth stay in a baby's system?

Meth detectable in poop: But read this from a website i found, :i used to work in a medical foster home for drug-affected babies who were taken at birth by the state. Most of these babies required 24 hour nursing care. I think the real question is not "will the drugs still be in the baby's system" but "how affected will this baby be by the drugs it's mommy was taking?" i could not agree more. It will be detectable in the babies first poop called meconium.