it's required that they give it to anyone with unknown chlamidiya status, and since most women who come in to give birth haven't had a recent test, they "have" to give it. (the thing is, they have to assume that your husband is cheating on you and that you don't know it - because so many are!!)
ANYWAY, you can just talk to your doc - get a test done, and then put in your birth plan that you've tested negative for chlamidiya and that you're opting out. That way they can't complain about it because you KNOW your status. At least... that's what I did and it was just fine.
I did have a couple people come and ask me why I was refusing the eye ointment (not in a confrontational way - I think they were either really wondering or are just supposed to ask), but when i told them why they were all like, "oh ok" and that was it.
Mom to James ( 5/2006), Claire ( 6/2008), furry kitties Calvin and Bob, and wife to Dennis.