It is important to note that Illumiscreen is a highly reliable non-invasive prenatal screen, and not a diagnostic test. This means it does not provide you with a definite yes or no answer. It tells you if there is an increased chance your pregnancy has a chromosome related condition. To confirm an increased chance result from this screen, a diagnostic test is needed. This requires either an amniocentesis procedure or chorionic villus sampling (CVS), however, the invasive nature of these procedures may pose a risk to your pregnancy. Your healthcare provider will be able to talk to you about these.