hi its done through ultra sound. We chose to have it done but did not care what he out come was as it was made with love and would be loved eithor way. We felt if it came back bad we could prepare our selves and family before birth.

it did come back bad but god blessed me with a healthy boy. the blood test was where it came back bad not the measurements. yeah we stressed about the outcome of the test but then excepted it and prayed about it. As i said our little man is perfect nothing wrong with him like that