I very much doubt it. Never heard of such a thing. Maybe if the mother looked like a crack addict? I know they use to test the mother for Syphilis.
No, I live in Pennsylvania.http://answers.yahoo.com/question/index?qid=20080420110141AARmiI9
They would only do it if they suspect the mother was doing drugs, or the baby has some kind of defect and they may have suspected it came from the mother abusing drugs. That's really the only reason why they would do it.