Nuchal Translucency (NT) plus a risk assessment for Down’s syndrome incorporating blood tests and a nuchal translucency scan (11+2 to 14+1weeks)
What does this package include?
- PAPP-A blood test (ideally taken between 10 and 11 weeks or at the time of the NT scan at 11+1 to 13+6 weeks)
- Nuchal translucency scan (performed between 11+2 to 14+1 weeks)
- Quadruple blood test (taken between 14 and 19+6 weeks)
This scan is used to assess the risk of Down’s syndrome by measuring the thickness of the fluid behind the neck of the baby.
The nuchal measurement from this scan is entered into our specialist computer software, along with the result of PAPP-A blood test to give you an initial result at the time of your scan. For even greater accuracy we then combine the result from your appointment with that of the quadruple test (performed after 14 weeks) to give a ‘combined’ risk assessment. On this basis you will be better placed to make a decision as to whether or not invasive testing (Amniocentesis or CVS (link to the invasive test page of the site) is required.
Although the baby is still small at this stage we will endeavour to assess some of the anatomy and incorporate this into our findings.
What does this scan tell me?
You will be provided with an individual risk for Down’s syndrome for this pregnancy. This is calculated by taking into account the following:
- Your age
- The thickness of the fluid behind the neck of the baby
- Presence or absence of any physical abnormalities
- Level of five hormones (PAPP-A, Hcg, UE3, Inhibin-A and afp) in the mother's blood
Why chose this test at Cambridge Fetal Care?
All scans at Cambridge Fetal Care are performed by experienced Fetal Medicine Consultants who are uniquely placed to discuss the scan findings at the time of your appointment. Sonographer lead services are unable to offer such advice.
Secondly the NTplus test has been shown to outperform comparable tests. Essentially NTplus has a higher detection rate and lower false positive rate which means you will be less likely to have an unnecessary invasive test.
At every step a consultant is available to offer the best professional advice.
How is the scan performed?
This scan is performed transabdominally by placing a probe on the tummy.
How to prepare for your scan
A moderately full bladder will improve the visibility of the pregnancy on a transabdominal scan. However, on occasion the baby may be in a particularly difficult position and we may ask that you walk about for 15 minutes or so or fill or empty your bladder as this can help us to obtain the very best views.
We are very happy to give photographs at the time of the scan; there is no charge for this but the quality of the picture may depend on the baby taking up a photogenic position!
After the scan, we will give you a follow up form. We should be very grateful, as part of our audit and quality control, if you would return this after your pregnancy.