Do they automatically test a pregnant woman for drugs while giving birth, or does something have to go wrong for them to test

Do they automatically test a pregnant woman for drugs while givin…?

http://www.chacha.com/question/do-they-automatically-test-a-pregnant-woman-for-drugs-while-giving-birth%2C-or-does-something-have-to-go-wrong-for-them-to-test

They don’t typically test without reason, but it is not recommended to take any recreational or extra otc drugs during pregnancy.