The combined test can be carried out in the beginning of the pregnancy to assess the chance of a baby with
Down Syndrome [ read more... ], Patau Syndrome [ read more... ] and Edwards Syndrome [ read more... ].
The test consists of a combination of two examinations:
- a blood test of the pregnant woman
- an ultrasound of the baby’s neck
Nuchal translucencyThe nuchal fold is fluid just behind the skin of the baby’s neck and is present in all babies up to at least 14 weeks. In case of a thickened nuchal fold (from 3.5mm) there is an increased chance of a child with a severe defect. This could be a syndrome like Down Syndrome. But can also be a sing of a hartdefect or other anomalies. You can find more information about the combined test (nl) via this link.
If possible, other things are also assessed, such as the head of the baby, the abdominal wall, limbs, stomach an bladder. Our sonographers have specialized themselves by certification at the FMF (Fetal Medicine Foundation). If possible they can ask for permission to look further than only the measurement of de fetus and the nucal transeluncency. However, this is not officially part of the test. The test is limited to measuring the crown-rump length, the skull and the nuchal fold.
The testThe test can take place between the 11th and 14th week of the pregnancy, preferably between 12½ and 13½ weeks.
You will receive the result by mail. In general the same day ore the day after. If the biochemistry of the blood is not present at the time of the ultrasound, the result will be received in two ore three days. In case of an increased risk for Down, Patau and ore Edwards, your obstetrician ore midwife will be informed right away so that he ore she can take further steps for counseling and, if wanted, further investigation. When a thick nuchal fold ore other anomalies are seen on the ultrasound (NT from 3.5 mm) you will be informed of this directly. If the biochemistry (needed for the combined test) is not known there will subsequently be no need to wait for the blood test because there is a high risk for an anomaly anyway. An appointment will be scheduled, as soon as possible, at the Radboud Hospital in Nijmegen.