"The Guttmacher Institute reported that 4 states (Iowa, Kentucky, Minnesota, and North Dakota) require health care professionals to test for prenatal drug exposure when prenatal drug abuse is suspected, and 14 states (Alaska, Arizona, Illinois, Iowa, Louisiana, Massachusetts, Michigan, Minnesota, Montana, North Dakota, Oklahoma, Rhode Island, Utah, and Virginia) require reporting women to child protective services (CPS) for prenatal substance use. However, a recent federal law (No: 108-36) attempts to create a uniform state response to prenatal substance abuse. "
Interesting stuff at this link:
http://emedicine.medscape.com/article/978763-differential