It is very hard to find free info on this online. I want to say that marijuana can be detected if used 20 weeks prior to birth, since meth stays in your body for a shorter amount of time, as long as she has stopped and doesn't use again she should be fine. Also hospitals wont drug test a baby unless they feel it is necessary (they think the mom is a junkie). I do think that your friend should also consider some drug counseling as meth is a highly addictive substance. I am very scared for this baby that your friend may relapse.
i feel so sorry this baby. i have no information to provide. try another forum like a pregnacy forum might be able to help even though you might get some answers you might not like. i think at least one person might have an answer.