Hi Miche

The risk of having a pregnancy with down syndrome for someone who is 40 years old based on age alone is 1/60.

If your risk with NF and blood has been calculated at 1/175, this is much better odds than based on your age alone. Therefore, the measurements taken (NF and blood enzymes) must have been really good. Has anybody explained this to you?

If you want to find more info or talk through the process of amnio, a genetic counsellor can help.

Good luck with the amnio,

Kate