South Africa
A female asked:
i am 13 weeks pregnant and went for an nuchal translucency, which came out at 2.2mm in thickness which the doctor said is thicker than normal?
1 doctor answer • 4 doctors weighed in

Dr. Shari Jacksonanswered
Radiology 21 years experience
Not that simple: Nt scan is one of many screening tests used to assess for risk of a major chromosomal abnormality. There is a range of "normal" that has been established by scanning thousands of pregnancies. As with any screening test, a cutoff is chosen somewhat arbitrarily based on statistics. Most studies use a cutoff of 2.5 or 3.0 for "abnormal." NT is combined with blood tests to determine overall risk.
5.3k viewsReviewed >2 years ago
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
Similar questions
NJ
A 28-year-old female asked:
Is 2mm a normal nuchal translucency at 13 weeks pregnant?
1 doctor answer • 2 doctors weighed in

Dr. Anthony Fillyanswered
Radiology 26 years experience
See below: The short answer is yes, it is within normal. However, it is a bit more complicated than that. The NT is one factor in assessing the risk of having a chromosomal abnormality. If you are 22 years old with an NT of 2 mm, you would get a different risk than a 45 yr old with an NT of 2 mm. There are other factors as well and the data is combined with blood work.
4.8k viewsReviewed >2 years ago
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
Last updated Jul 15, 2018
People also asked
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with
membership
Disclaimer:
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.