Why should I take the test?💡

A nuchal translucency testing is a specialized routine ultrasound that measures the nuchal fold thickness. It focuses on a small, clear space at the back of a baby to determine whether the baby has chromosomal abnormalities. This spot tends to accumulate fluid and looks thicker if your baby carries genetic problems.

It is mandatory but highly recommended if you are over 35 years of age or you have a family history of certain conditions. It is conducted between the 11th and 14th week of pregnancy. The result of the test can help you make important decisions about your management of pregnancy and delivery, and any necessary preparations or special care that your child might need. 

How is the test done?💉

Your healthcare provider will use abdominal ultrasound to measure the nuchal fold. A sonographer applies a transducer to the outside of your stomach to measure the baby from crown to rump. The fetal age, the location of the nuchal fold and its thickness will appear on screen.  

Having a full bladder will give you the best ultrasound picture. An hour before the test, you might need to drink 2-3 glasses of water to make your bladder full. You cannot urinate before the ultrasound. 

TMI from Baby Billy👩‍⚕️:  

Normal results of the test

Nuchal translucency measurement correlates with the gestational age. The higher the measurement compared to other babies at the same age, the higher the risk is for the baby to have genetic disorders. If the measurement is up to 2mm when the baby is around 11 weeks old, the baby is at low risk for any problems. If the measurement is up 2.8mm at 13 weeks and 6 days old, the baby is relatively safe and healthy.

Abnormal results of the test

More fluid at the back indicates that the baby might have Down's syndrome, Turner syndrome or congenital heart disease. However, the test itself cannot diagnose any specific condition. An abnormal result only means that there is a statistical likelihood of your baby having a problem. Your doctor might suggest follow-up diagnostic testing. 

Nuchal translucency risks

Both the ultrasound and the blood tests are completely painless and safe for you and your baby. You are perfectly fine in the hands of all professional doctors!