The NT scan must be done when youre between 11 and 14 weeks pregnant, because this is when the base of your babys neck is still transparent. (The last day you can have it is the day you turn 13 weeks and 6 days pregnant.) Some practitioners also look for the presence of the fetal nasal bone during the NT scan.

Is 11 weeks too early for NT scan?

Its difficult to do the scan before 11 weeks because your baby is still so small. It would also be too early to combine it with blood tests. Its too late to do the NT scan after 14 weeks, as any excess nuchal fluid may be absorbed by your babys developing body .

Can a NT ultrasound tell gender?

There were no relations between fetal gender and FHR and also NT. Conclusions: Gender can be detected with great accuracy in gestations between 11 to 13 weeks and 6 days by using AGD.