Ultrasound and Radiology

NT Ultrasound

Fast & Reliable Reports You Can Trust
Accurate Reports Delivered On Time
Advanced Imaging Technology for Clear Diagnosis
Expert Radiologists Reviewing Every Scan

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₹1,200/*

*Prices may vary by city and chosen centre. Inclusive of sonologist report. No hidden charges.

Fast & Reliable Reports You Can Trust
Accurate Reports Delivered On Time
Advanced Imaging Technology for Clear Diagnosis
Expert Radiologists Reviewing Every Scan

NT Ultrasound — About the Test

An NT Ultrasound (Nuchal Translucency Scan) is the most important first-trimester screening test in pregnancy. It measures the fluid-filled space at the back of the baby's neck — called the nuchal translucency — between 11 weeks and 13 weeks 6 days of pregnancy. An increased NT measurement is associated with a higher risk of chromosomal abnormalities including Down syndrome (Trisomy 21), Edward syndrome (Trisomy 18), and Patau syndrome (Trisomy 13). The NT scan is not a diagnostic test — it assesses risk, not certainty. It is typically combined with first-trimester blood tests (beta-hCG and PAPP-A) in a Combined First Trimester Screening panel to calculate an individual risk score. This combined screening has a detection rate of over 90% for Down syndrome. The scan additionally confirms gestational age, checks for a heartbeat, identifies multiple pregnancies (twins), and assesses the nasal bone (NB) — another marker for chromosomal risk. No radiation. No injections. Completely safe for mother and baby. Important: The NT scan has a strict gestational window — it must be performed between 11 weeks 0 days and 13 weeks 6 days (CRL 45–84 mm). Missing this window means the scan cannot be performed. Book early.

What Happens During an NT Ultrasound? (20–30 Minutes)

Key benefits of this package include:

Step 1 — Preparation: Drink 2–3 glasses of water 30–45 minutes before the scan. A moderately full bladder helps visualise the uterus transabdominally. No fasting required.
Step 2 — Positioning: Lie on the scanning table on your back. Expose the lower abdomen. The sonologist will attempt a transabdominal scan first.
Step 3 — The scan: The sonologist locates the baby, confirms the CRL (crown-rump length) to verify gestational age is within the NT window, then measures the nuchal translucency — the fluid space at the back of the baby's neck. Multiple measurements are taken; the best measurement is used. The nasal bone is also assessed.
Step 4 — Transvaginal scan (if needed): If the baby's position does not allow a clear measurement transabdominally (particularly in early 11-week scans), a transvaginal scan may be recommended for accuracy. This is discussed with full consent before proceeding.
Step 5 — Done: 20–30 minutes. Measurement, images, and sonologist report delivered within 4 hours to your email and WhatsApp.

What an NT Ultrasound Assesses

Chromosomal Risk Screening

Nuchal Translucency (NT) measurement — fluid at the back of the neck; ≥3.5 mm is a significant risk marker

Nasal bone (NB) presence or absence — absent nasal bone is associated with Down syndrome risk

Risk calculation for Trisomy 21 (Down syndrome), Trisomy 18 (Edward syndrome), Trisomy 13 (Patau syndrome)

Combined with PAPP-A and beta-hCG blood tests for a risk score (Combined First Trimester Screen)

Foetal Wellbeing Assessment

Foetal heartbeat — presence and rate

Crown-Rump Length (CRL) — confirms gestational age and due date

Foetal number — confirms singleton or multiple pregnancy (twins/triplets)

Foetal movement — observed during the scan

Structural Screening (Early)

Gross structural abnormalities — severe defects may be visible at this stage

Foetal position and lie

Placental location — early assessment of placenta position

Amniotic fluid — volume assessment

Uterus and Ovaries

Uterine abnormalities — fibroids, uterine shape

Ovarian cysts — particularly corpus luteum cysts (common in early pregnancy)

FAQs

The NT scan screens for chromosomal abnormalities — particularly Down syndrome — by measuring the fluid thickness at the back of the baby's neck between 11 and 14 weeks. It also confirms gestational age, heartbeat, and checks for multiple pregnancies.

Between 11 weeks 0 days and 13 weeks 6 days of pregnancy (crown-rump length 45–84 mm). This window is strict — the scan cannot be performed before or after. Book as early as possible to secure an appointment within the window.

No. An increased NT is a risk indicator, not a diagnosis. It means the risk is higher than average and further testing is recommended — typically a NIPT (Non-Invasive Prenatal Test) or amniocentesis. Many babies with a high NT have normal chromosomes.

This combines the NT measurement with two blood tests — PAPP-A and beta-hCG — taken at the same time. Together they calculate an individual risk score for chromosomal abnormalities with a detection rate of over 90%. Your doctor will advise if this combined panel is recommended.

Yes. Ultrasound uses sound waves — no radiation. It is completely safe for both mother and baby.

20–30 minutes. Report ready within 4 hours.

Book at medall.in, via the Medall app, by calling +91 7550 177 777, or on WhatsApp.

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