Noninvasive prenatal testing (NIPT) involves a simple blood screening that analyzes that DNA (it’s called cell-free DNA, or cfDNA) to pinpoint baby’s risk for a number of genetic disorders, including Down syndrome.
It’s important to know that NIPT is a screening test — not a diagnostic test. This means that it can’t diagnose a genetic condition with certainty. It can, however, predict whether the risk of a genetic condition is high or low.
Specifications (general; to add kit-specific later):
The 1st Trimester Combined Pre-Natal Test, so far considered as the most accurate procedure for prenatal screening, has a detection rate of 90- 95%, with 5% of false-positive and 5-10% false-negative rates.
The results of NIPT can be back in as little as three days, but it can take up to two weeks in some cases. Generally, you should expect to get the results back within about: 10 days
Who should undergo the test?
There may be some women who may be at a higher risk for having a baby affected with a chromosomal condition, such as Down Syndrome, which might lead your providers to more strongly recommend it, such as:
- maternal age of 35 and older at delivery
- a personal or family history of a pregnancy with a chromosomal abnormality
- a maternal or paternal chromosomal abnormality
What will the results indicate?
Results indicate maternal risk for Down Syndrome (Trisomy21), Edward Syndrome (Trisomy 18) and Patau Syndrome (Trisomy 13), chromosomes X and Y anomalies and fetal gender.