Heroin can cross the placenta and affect a developing fetus, with its metabolites detectable in fetal blood typically within a few hours after maternal use. The duration that heroin remains in fetal blood can vary, but it is generally detectable for several hours to a couple of days, depending on factors such as the amount used, the timing of use, and the individual metabolism of both the mother and fetus. Chronic maternal use can lead to longer-lasting effects and withdrawal symptoms in the newborn.
Forever
Don't do it!!!
7 Days tops for sure dude. For most people its 72 hours or less, but after 7 days an addict who's done it his entire life would be clean of heroin.
24 hours
Heroin usually is cleared from the body in 2-3 days.
try bathing
48-72 hours
how long will one hit of herion stay in the blood
3 - 5 days. mostly 3.
3 days
Heroin will stay in the urine for 3-5 days
It won't stay in the baby's cord. It will be in its blood for as long as it's in yours. DO NOT smoke while you are pregnant as the chemicals produced by combustion are dangerous to the fetus. Vaporize it or make edibles to avoid any risk of harm to the baby.