Are all amnio tests sent away for testing?

Not all. At baylor college of medicine, we are privileged to have one of the preeminent genetics departments in the United States, so our amniocentesis results are all obtained in-house. Most practices, however, do need to send the amniotic fluid specimens they collect to outside genetics laboratories. Keep in mind that tests such as sequenom's maternit21 will render amniocenteses obsolete pretty soon.