Noninvasive DNA prenatal testing is also called as a cell-free fetal DNA screening. NIPS screening is done by taking a sample of maternal blood which is drawn at any time after 10 weeks of pregnancy. The main benefit of NIPS is that it can identify if your baby is at risk for chromosomal disorders. Most commonly, this prenatal testing determines the risk of disorders such as Down syndrome (trisomy 21), Trisomy 18, Trisomy 13, and also the conditions caused by the missing or extra X and Y chromosomes.
It’s important to know that NIPS is a screening test, not a diagnostic test; this means, it can’t diagnose the genetic condition with certainty but can predict the risk of a disorder.
How accurate is the Noninvasive DNA prenatal testing
In a recent study, it is proven that NIPT or NIPS has very high sensitivity and specificity for Down syndrome. For other conditions such as Trisomy 18, and Trisomy 13, the sensitivity is slightly lower but still strong. There are also false positive NIPT screening results, and your healthcare provider will likely order you for additional diagnostic tests.
It is better to contact DNA testing professionals who can assist you properly and also can help you in choosing a suitable prenatal test for you. For example; you can search as “DNA testing Fort Worth” and you will get numerous options of DNA centers in your particular city.