NT Scan
First-trimester chromosomal screening with nuchal translucency measurement and detailed early anatomy.
01 · What Is This Scan
The First Detailed Look At Your Baby's Health.
The Nuchal Translucency (NT) scan is a specialised first-trimester ultrasound performed between 11 weeks and 13 weeks 6 days. It combines a precise measurement of the fluid collection behind the baby's neck with maternal blood markers (double marker) to calculate the risk of Down syndrome and other chromosomal conditions — while also performing an early anatomy check.
02 · Why It Matters
- Accurate first-trimester screening for Down syndrome, Edwards, Patau
- Detects up to 90% of major chromosomal abnormalities when combined with blood markers
- Early identification of major structural anomalies (brain, heart, limbs)
- Screens for pre-eclampsia and growth restriction risk
03 · What We Check
A Systematic, Head-To-Toe Assessment.
Nuchal translucency measurement (to 0.1 mm precision)
Nasal bone presence
Ductus venosus and tricuspid flow
Fetal heart four-chamber view
Head, brain and spine anatomy
Abdominal wall and limbs
Placental location and uterine artery Doppler
04 · How It's Done
Your Visit, Step By Step.
Registration
Share your ID, LMP and any referral notes at reception.
Detailed Consultation
Dr. Archana explains the scan, screening options and what results mean.
The NT Scan
30–40 minutes on GE Voluson E-Class with fetal medicine protocols.
Combined Report
Risk report integrating NT + blood markers — with full counselling.
05 · Preparation
How To Prepare.
- Come with a comfortably full bladder
- Bring any first-trimester blood test reports (double marker, if done)
- Wear a two-piece outfit for easy access to the abdomen
- Allow 60–75 minutes total time at the centre
A Note From Dr. Archana
"The NT scan is where fetal medicine begins. It takes time, precision and calibration. We follow the FMF London protocol on every single scan — no shortcuts."
Dr. Archana · Fetal Medicine Specialist
06 · FAQs
Common Questions About The NT Scan.
Is the NT scan the same as the anomaly scan?
No. The NT scan is a first-trimester screening (11–13+6 weeks). The anomaly scan (TIFFA) is a detailed second-trimester scan at 18–22 weeks — both are needed.
What is the double marker test?
A blood test measuring free β-hCG and PAPP-A. Combined with the NT measurement and maternal age, it produces a personalised risk score.
If my NT scan is normal, do I still need the anomaly scan?
Yes. The NT scan focuses on chromosomal risk; the anomaly scan checks every organ system in detail.
What is a high-risk result?
A risk higher than 1 in 250. This does not mean the baby has a condition — it means further tests (NIPT or CVS) should be discussed. We counsel every high-risk family personally.
07 · Related Services
You May Also Need.
Book Your NT Scan Today.
Reports are handed to you before you leave — or on WhatsApp within the hour.