Understanding Your Results
The Combitest® calculates the risks that your fetus could be affected with trisomy 21, 18 and/or 13 by combining measurements from the ultrasound (Nuchal translucency), biochemical dosages (blood test) and when necessary, the dosages from the second trimester blood test if necessary.
In the first trimester, there are three risk categories;
Low risk (< 1:1500): No special follow-up is required other than your routine pregnancy follow-up
Moderate risk (Between 1:100 and 1:1500): Performing an additional blood test, free of charge, during the second trimester (Between 15.0 and 17.6 weeks) is recommended for more accuracy
High risk (> 1:100): Your physician will recommend the NIFTY® test (non invasive prenatal test) or an amniocentesis * NIFTY test included with no extra fees if the option Combitest® / NIFTY® Reflex was selected
In the second trimester, two risk categories are possible:
Low risk (< 1:250): No special follow-up is required other than your routine pregnancy follow-up.
High risk (> 1:250): Your physician will recommend the NIFTY® test or an amniocentesis. * NIFTY® test included with no extra fees if the option Combitest® / NIFTY® Reflex was selected.