Hi Doctor, my wife is 25 years old and 13 week
pregnant.
It's our first child. In NT&NB it's showing one side Nasal bone is visible and other side it's absent, in double marker Trisomy 21 shows as 1:49 ratio. When I red complete report, while generating double marker they made NB as absent and T21 biochem only result shows as 1:506(low risk). Is Trisomy 21 report showing high risk because of NB input as Absent? Please help