The NT scan in Delhi — the nuchal translucency scan — is an important first-trimester ultrasound done between 11 and 13 weeks of pregnancy. It measures a small fluid space at the back of your baby’s neck to screen, very early, for the chance of Down syndrome and certain other conditions. At Edge Imaging & Diagnostics in Paschim Vihar, West Delhi, the NT scan is performed accurately on high-resolution ultrasound, giving you early reassurance and, when needed, time to plan.
This guide explains what the NT scan is, when it is done, what it screens for, and how it works together with the blood tests of first-trimester screening.
Reviewed by Dr. Nishant Thapar, MBBS, MD (Radiodiagnosis), Founder — Edge Imaging & Diagnostics, Paschim Vihar, New Delhi.
What Is an NT Scan?
The NT (nuchal translucency) scan is a specialised ultrasound that measures the thickness of a small, clear fluid collection under the skin at the back of a baby’s neck. All babies have some fluid here; when the amount is increased, it can be associated with a higher chance of chromosomal conditions such as Down syndrome, or with some heart problems. The NT scan is a screening test — it estimates risk; it does not by itself diagnose a condition.
When Is the NT Scan Done?
The NT scan must be done in a specific window — between 11 weeks and 13 weeks 6 days of pregnancy — when the baby’s crown-rump length is about 45–84 mm. Before or after this window the measurement is not reliable. This is why it is important to have your dating ultrasound on time, so the NT scan can be planned for exactly the right days.
What Does the NT Scan Screen For?
Combined with your age and blood tests, the NT scan helps estimate the chance of:
- Down syndrome (Trisomy 21)
- Edwards syndrome (Trisomy 18) and Patau syndrome (Trisomy 13)
- Some congenital heart defects and other conditions, when the NT is increased
The radiologist also checks early anatomy and, where possible, markers such as the nasal bone, which add to the accuracy of screening.
NT Scan + Double Marker: Combined First-Trimester Screening
For the best accuracy, the NT scan is usually combined with a double marker blood test (which measures two pregnancy hormones, free beta-hCG and PAPP-A). Together — the scan measurement, the blood results, and your age — these give a single, more reliable risk estimate. This is called combined first-trimester screening, and it detects a large proportion of Down syndrome pregnancies while keeping unnecessary invasive tests to a minimum.
| Part of screening | What it is | What it adds |
|---|---|---|
| NT scan | Ultrasound of neck fluid | Measures nuchal translucency |
| Double marker | Blood test (beta-hCG, PAPP-A) | Biochemical risk markers |
| Maternal age | Your age | Baseline risk |
What Does the Result Mean?
A normal NT measurement with a low-risk screening result is reassuring. An increased NT or a higher-risk result does not mean your baby definitely has a problem — many babies with a raised NT are perfectly healthy. It simply means further testing can be offered, such as NIPT (a blood test), or a diagnostic test like chorionic villus sampling (CVS) or amniocentesis, along with counselling, so you get clear answers.
How the NT Scan Is Performed and Is It Safe?
The NT scan is a simple, painless ultrasound, usually done over the abdomen (sometimes a transvaginal scan gives a clearer view early on). It uses sound waves, not radiation, and is completely safe for you and your baby. The measurement needs care and a good position of the baby, so it may take a little time — a short wait or gentle movement often helps the baby turn.
NT Scan in Delhi — Why Choose Edge Imaging
At Edge Imaging & Diagnostics, your NT scan is performed by Dr. Nishant Thapar with careful measurement technique and modern ultrasound, and can be coordinated with your double marker test for complete first-trimester screening — all under our NABH-aligned quality standards. Expectant mothers across West Delhi — Paschim Vihar, Punjabi Bagh, Rajouri Garden, Moti Nagar and nearby areas — trust our accurate, patient-first prenatal care. To book an NT scan in Delhi, call 9555999960 or visit our contact page.
Frequently Asked Questions
How much does an NT scan cost in Delhi?
An NT scan in Delhi usually costs about ₹1,200–₹2,500, and a little more if combined with the double marker blood test. Edge Imaging offers transparent pricing — please call us for the current cost.
Is the NT scan safe?
Yes, completely. It is an ordinary ultrasound using sound waves, with no radiation and no risk to you or your baby.
Does the NT scan diagnose Down syndrome?
No — it is a screening test that estimates the chance. A higher-risk result can be followed by NIPT or a diagnostic test (CVS or amniocentesis) for a definite answer.
What if I miss the 11–13 week window?
If the window is missed, the NT scan cannot be done reliably. Your doctor may instead advise second-trimester screening such as the quadruple marker test.
Does the NT scan tell the baby’s gender?
No. Under the PCPNDT Act, the sex of an unborn baby is never disclosed during any scan in India. The NT scan is only for health screening.
Where can I get an NT scan near me in West Delhi?
Edge Imaging & Diagnostics in Paschim Vihar offers accurate NT scans, and can arrange the double marker test together, for patients across West Delhi. Call 9555999960 to book.
Book Your NT Scan in Delhi
Screen early and get peace of mind. Book an accurate NT scan in Delhi at Edge Imaging & Diagnostics between 11 and 13 weeks — with the option to combine it with your double marker test. Call 9555999960 to schedule.
Disclaimer: This article is for general information and patient awareness only and does not replace a consultation with a qualified doctor. Screening timing and interpretation depend on your individual pregnancy. For trusted patient information on first-trimester screening, see the NHS screening guide.