Will the baby test positive for meth if the mother has stop using at the begining of her seventh month?

Seeking help: There are more important issues than the tax screen result. It is crucial that the doctor treating her know about the Meth use. The prenatal care need to be altered knowing that this pregnancy is very high risk. Protecting the baby is key. This drug can be a disaster for pregnancy. Placental abruptions, growth restrict and preterm labor are only a few complications. Tell your doc about Meth use.

Don't try to hide: If I have reason to look, I will find evidenced of drug exposure as far back as 20 weeks of gestation, maybe earlier. Anytime is a good time to stop and would increase the chance the baby would not go through drug withdrawal, be born prematurely or stroke out. You need to let the treating physician know so proper treatments for both can be planned & risks limited for both.