Common "Nt Scan" queries answered by top doctors | iCliniq

Nt Scan

An NT (Nuchal Translucency) scan is a prenatal screening done in the first trimester, which measures the size of the clear tissue at the back of the fetus's neck called the nuchal translucency. Too much clear space indicates chromosomal abnormalities like Down syndrome, Patau syndrome or Edwards syndrome.

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I am 12 weeks pregnant, and my NT scan showed 3 mm thickness. Should I redo the scan?

Query: Hello doctor, I am a healthy 41 year old woman, and I am 12 weeks pregnant for the first time. The results of my NIPT harmony test indicated no risk for trisomy 21, 18, and 13. The results of my blood test and NT scan showed that everything was normal except the nuchal fold thickness was 3 mm. This ...  Read Full »

Dr. Sadaf Mustafa

Answer: Hi, Welcome to of all, I would like to congratulate you on starting this beautiful journey, being a mom of two, I understand your concerns. Here is what I would suggest.Wait till the 18th week to get the anatomical screening. And it has to be checked by a cardiologist. There is no...  Read Full »

Are my NT scan and dual marker test showing any risk in pregnancy?

Query: Hello doctor, I am 35 years and in my 13th week of pregnancy. This is my first pregnancy and acheived through ICSI. I had my NT scan and dual marker test was done a week back. The results for the same are NT: 1.10 mm, CRL: 68.2 mm, PAPP-A: 0.18 MOM/0.66 mIU/ml, free beta-hCG: 46.5 ng/ml. I have been...  Read Full »

Dr. Uzma Arqam

Answer: Hi, Welcome to Your previous obstetric, gynecology, medical, and drug history matters. Have you been on folic acid daily? If you had any medical issue, was it treated and checked properly? Your nuchal translucency is normal. PAPPA (pregnancy associated plasma protein) more than 0.5 MO...  Read Full »

What is the purpose of NIPT in delayed pregnancy?

Query: Hi doctor, I am 35 years old. Right now I am14 weeks pregnant. My doctor found out that my baby has a risk of Down's syndrome. In NT scan at 11 weeks 5 days the CRL was 48 mm and NT was 1.32 mm the double marker test report is showing background risk T 21 1:369 and adjusted risk 1: 911. T 18 backgr...  Read Full »

Dr. Kamalpreet Kaur Nagpal

Answer: Hi, Welcome to Your report in the link is not readable (attachment removed to protect patient identity). However, the values that you have written in the query seem to be all within range. For T21 cut off is 1 in 250 and NT 1.3 mm is also fine. Maybe you are 35 and doctor wants to be ...  Read Full »

What is the risk of Down syndrome at delayed pregnancy?

Query: Hello doctor, Please explain my NT scan report and double marker test. My present age is 44 years. My NT scan was done on 12w 5d. Crl - 64.1 mm Nasal bone present Nt - 1.8 mm Ductus venosus - normal flow Placenta - anterior Double marker result: Hcg corr mom - 1.64 Nb present Nt corr mom ...  Read Full »

Dr. Balakrishnan R

Answer: Hi, Welcome to NT scan is just a screening test to pick-up cases of Trisomy. Nuchal translucency of less than 3.2 mm, nasal bone seen and normal blood flow in ductus means the chance of trisomy is very low. To confirm this doctor has done a double marker test. They too are within norm...  Read Full »

Which test should be done in first trimester, NTNG scan or dual marker?

Query: Hello doctor, Which test should be done prior? NTNG scan or dual marker for pregnant women? LMP was two months back.   Read Full »

Dr. Amit Kyal

Answer: Hello, Welcome to First-trimester screening for Down's syndrome should be done in all pregnancy between 11 to 14 weeks. The first-trimester screening for Down's syndrome includes ultrasound for NT/NB scan and on the same day, blood is taken for the dual marker (B hCG and PAPP-A). Ther...  Read Full »

NT scan shows placenta is fundo posterior lower edge reaching internal os. Can I travel?

Query: Hi doctor, Our 12 weeks NT scan indicates developing placenta is fundo posterior lower edge reaching internal OS. The doctor advised 30 days complete bed rest. I need your opinion on the same case and also doing an ultrasound scan after two weeks. This scan was done 10 days back and since then I am...  Read Full »

Dr. Sameer Kumar

Answer: Hello, Welcome to At 12 weeks gestation with placenta fundo-posterior with lower edge reaching internal is a fairly acceptable finding for early pregnancy. It does not really call for bed rest if there has been no episode of any bleeding per vaginum. The safest distance of placenta is...  Read Full »

Please explain about the factors help to calculate the risk of trisomy 21.

Query: Hi doctor, My NT scan showed me a range of 1.4 mm and my double marker showed me a risk of 1:20300. But my age risk showed a result of 1:176. Which one has to be considered and what it signifies regarding the risk for trisomy 21?  Read Full »

Dr. Uzma Arqam

Answer: Hi, Welcome to I have gone through the query (attachment removed to protect patient identity). Many factors count for calculating risk. They are age, serum markers, family history, and nuchal translucency. An age-related risk is more after 35 years of age. As you are 38 years old, so ...  Read Full »

Placenta is on the right lateral wall 0.3 inch above the os. Is it low lying?

Query: Hello doctor, I had NT scan at 12 weeks and 5 days in which was found placenta is on the right lateral wall, 0.3 inch above the os. Internal os is closed. Cervical length is 37 mm. Does this mean placenta is low lying? Is there a serious problem?  Read Full »

Dr. Sravanthi Nuthalapati

Answer: Hello, Welcome to Yes, your scan indeed tells that you are having a low lying placenta. In such cases, chances of painless bleeding may be there. It would be better to avoid intercourse and heavy activities and to have a review of placental location in the anomaly scan at 19+ weeks. A...  Read Full »

What is the risk of Down's in my wife's double marker report?

Query: Hi doctor, This is the report of double marker test of my wife: Corrected MoM and calculated risks: fb-hCG 165 ng/ml 3.82 Corr. MoM PAPP-A 1.84 mlU/ml o.45 Corr. MoM Ultrasound data: Nuchal translucency 1.00 mm CRL 60 mm 0.64 MoM Gestational age by CRL 12+ 2 Nasal bone present Gestational age on th...  Read Full »

Dr. Sravanthi Nuthalapati

Answer: Hello, Welcome to To explain you the report in plain language, first of all, let me tell you that the dual marker test is just a screening test for Down's syndrome and other chromosomal anomalies like trisomy 13/18. So, the test involves calculation of the risk of carrying a Down's...  Read Full »

Can you please help me interpret my NT scan report?

Query: Hello doctor, I am a 44-year-old female. After my three miscarriages, I am 13 weeks pregnant now with IVF treatment. I have got my NT scan with double marker blood test. The results are as follows: Biochemical Trisomy 22 risk: 1:249, combined Trisomy 21 risk. Using NT & Other parameters: 1:946. ...  Read Full »

Dr. Sameer Kumar

Answer: Hello, Welcome to The NT (nuchal translucency) scan levels of nuchal translucency are normal with NT less than 2.5 mm. However biochemical trisomy 21 risk is high but the combined NT+ biochemical risk is low at 1:946. You may upload the picture of the cutoff graph for a convincing ...  Read Full »

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