Finally got our results from the NT screening we had done in Lexington on 2/26/07. The risk for chromosomal abnormalities increases as the age of the mother increases, and since I'm "old", we had this test done just for peace of mind. Results: Our risk for Down's Syndrome is 1 in 4800. Our risk for Trisomy 18 is 1 in 10,000. I'd say our numbers look pretty good!