Yeah, i was offered that amino thing test for my kids I basically said, why? It will still be a baby if it has down syndrome or not, why would i want to do that?
There is also a slight possibility that your kid could lose an arm or something when they take some of the fluid. (parts being so small yet and all you could just get them as well if the doctor wasn't careful.) (Guess you could abort for abnormalities then because your kid would have one less limb? bah on it.)