Health – you keep on missing the point. The ultrasound is not the ALTERNATIVE OPTION, it is the REGULAR OPTION. The OP was recommending this test as the FIRST choice in testing. The AFP test is the alternative in most cases.
I would like to offer my apologies to the OP if I offended them in any way. My intention was only to bring the proper awareness to this disease and to point out the danger of omitting medical details when posting advice. I wish your child a refuah shleimah and may he/she lead a wonderful, full and active life.