Nuchal Translucency (NT) Scan: Early Screening for Baby’s Health
Get peace of mind with a Nuchal Fold Scan. This safe, non-invasive ultrasound screens for genetic conditions early in pregnancy. Understand your results with expert guidance.
- Available in Klang Valley, Penang & Johor Bahru
- Digital scan images delivered to your Flabee Care App
What is a Nuchal Fold Scan?
A nuchal fold scan, also known as a Nuchal Translucency (NT) scan, is an early pregnancy ultrasound performed between 11 and 14 weeks to measure the fluid-filled space at the back of the fetus’s neck. An increased measurement can indicate a higher risk for certain chromosomal abnormalities, such as Down syndrome, as well as other genetic disorders and some heart defects. It is a non-invasive procedure that provides information for parents and doctors to consider, and it is often combined with a maternal blood test for a more accurate risk assessment.
When is the Right Time to Do an NT Scan?
Timing is absolutely critical for the NT scan. It must be performed during a very specific window in your pregnancy:
- Between 11 weeks and 13 weeks plus 6 days of gestation.
- When your baby’s crown-rump length (CRL) measures between 45mm and 84mm.
Why is the timing so precise? Before 11 weeks, the baby is too small to obtain an accurate measurement. After 14 weeks, the lymphatic system develops, and the excess fluid is naturally absorbed, making the nuchal translucency measurement unreliable. Adhering to this narrow timeframe ensures the results are valid and meaningful.
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Frequently Asked Questions (FAQs) About the Nuchal Fold Scan
1. Is the NT scan mandatory?
No. The Nuchal Translucency (NT) scan is optional. It is a screening scan offered to parents who wish to gain additional information during early pregnancy. Whether or not to proceed is a personal choice and can be discussed with your doctor.
2. How accurate is the NT scan?
The NT scan is a screening tool, not a diagnostic test. When combined with other factors such as maternal age and blood tests, it can help estimate risk levels, but it cannot provide a definitive diagnosis.
3. Can the NT scan detect the baby's gender?
No. The NT scan is not intended to determine the baby’s sex, and gender identification is not part of this screening.
4. What if my baby is in a bad position during the scan?
This is very common. The sonographer may ask you to change position, take a short walk, or gently move to encourage the baby to shift. In some cases, a repeat visit may be suggested if suitable images cannot be obtained.
5. Does a low-risk result guarantee a healthy baby?
No. A low-risk result is reassuring, but it does not guarantee that the baby will not have any conditions. The NT scan assesses risk only and does not replace routine pregnancy care or follow-up scans.
6. Can the scan detect twins?
Yes. An NT scan can usually identify twin or multiple pregnancies, as well as whether the babies share a placenta, depending on visibility.
7. What other conditions can a large NT indicate?
An increased NT measurement may be associated with a range of possibilities, including chromosomal differences or structural conditions, but it can also be seen in otherwise normal pregnancies. Further assessment by your doctor is needed to understand its significance.
8. Should I have the NT scan if I'm young and healthy?
Yes, you may still choose to have it. The NT scan is offered to women of all ages, as chromosomal conditions can occur in any pregnancy. The decision is personal and best made after discussion with your doctor.
9. What's the difference between the NT scan and the NIPT?
The NT scan is an ultrasound screening that looks at physical measurements and early anatomy.
NIPT (Non-Invasive Prenatal Testing) is a blood test that analyses fetal DNA in the mother’s blood. NIPT generally has higher screening accuracy, but both are screening tests, not diagnostic.
10. Where can I get an NT scan?
NT scans are usually performed at hospitals, specialist clinics, or selected ultrasound centres by trained professionals sonographer. Your doctor can advise you on where to have the scan and whether it is suitable for you.
Important note:
The NT scan is intended for screening and observation purposes only. It does not provide a diagnosis and does not replace medical consultations or follow-up with an O&G doctor or Maternal–Fetal Medicine (MFM) specialist.
11. What should I do if the NT measurement is larger than 3 mm?
Try not to panic. An NT measurement larger than 3 mm does not mean there is a definite problem. It simply indicates that further review may be helpful to better understand the finding.
If this happens, you will usually be advised to follow up with your attending O&G doctor, who may refer you to a Maternal–Fetal Medicine (MFM) doctor if needed. The specialist may recommend additional screening tests or follow-up scans to gain clearer information.
It’s important to remember that the NT scan is a screening tool, not a diagnostic test. Some babies with a larger NT measurement are later found to be completely healthy. Your doctor will guide you through the next steps and discuss suitable options based on your individual situation.
Important note:
NT scans are intended for screening and risk assessment only. Any interpretation and medical decisions should always be made in consultation with your doctor.
Disclaimer: This article is intended for informational purposes only and does not constitute medical advice. Always consult with your qualified healthcare provider or a genetic counselor to discuss your individual circumstances, test results, and any concerns you may have about your pregnancy.