I had a normal NT measurement and high HGC and low PAPPA. My downs risk was 1:5.

It can be difficult to get the NT measurement right. They need to get bub from the right angle or it will give a thicker measurement. So I would be inclined to say the thinner measurement is more accurate.

PAPP-A is related to the function of the placenta.

What was the risk factor they gave you? What were your NT measurements?