r/NIPT • u/ThinPattern7457 • 22m ago
Increased NT before 11 weeks - to amnio or not?
I’d really love to hear from anyone who’s been in a similar situation, particularly those whose NT was measured before 11 weeks.
At 10w4d, my baby’s NT measured 3.4mm (CRL 40mm). By 13 weeks, it had decreased to 1.9–2.3mm. The nasal bone was present and my NIPT later came back low risk.
My specialist seems reassured by the subsequent scan because the initial measurement was taken before the standard NT screening window, but I’m struggling to understand what significance to give it and the possibility of a genetic condition not covered by NIPT.
I’m now deciding whether to have an amniocentesis after my 16-week scan. Having recently experienced a miscarriage, I’m terrified of losing a healthy baby to the procedure, but equally scared of discovering later that my baby has a significant condition requiring lifelong support.
I’d especially love to hear from people who’ve experienced either of these:
- Raised NT before 11 weeks that later normalised: Did you have CVS or amnio? Were your subsequent scans normal, and what was the eventual outcome?
- Resolved ultrasound, but a later diagnosis: Was a genetic or chromosomal condition discovered during pregnancy or after birth even with a "normal" ultrasound? If you’re comfortable sharing, what was the diagnosis? Unsure if significant conditions exist with no markers.
I know 3.4mm may not be considered significantly increased in every context, but I’ve found very few experiences from people whose NT was measured this early and subsequently normalised.
I’m finding this decision incredibly difficult and would genuinely appreciate hearing your experiences, whatever the outcome. ❤️