Quad testing

Is anyone not going to do the quad testing? I had my check up yesterday at 19 weeks and they told me I can do the test if I want to, I was prepared to take the test but then the nurse looks at me and tells me that she has seen over 100 false postives for the quad testing then she had seen some that came up negative and then the baby ended up being positive for Down syndrome. That wasn't really what I wanted to hear, I'm a first time mom although this is my second pregnancy but my first ended in a miscarriage at 9 weeks last time.