What Is the False Positive Rate for Trisomy 21 (Down Syndrome) in NIPT?
Learn about the false positive rate for Trisomy 21 in non-invasive prenatal testing (NIPT) and why confirmatory tests are essential.
Video transcript
For Trisomy 21 (Down Syndrome), non-invasive prenatal tests (NIPT) generally report a false positive rate of less than 0.1%. However, confirmatory diagnostic tests are recommended to ensure accurate results.
Questions and answers
What is the false positive rate of NIPT for Trisomy 21?
The false positive rate for Trisomy 21 in non-invasive prenatal testing (NIPT) is generally less than 0.1%.
Why are confirmatory diagnostic tests recommended after NIPT?
Confirmatory diagnostic tests are recommended to verify NIPT results and ensure accurate diagnosis, as NIPT is a screening test and can occasionally yield false positives.
How accurate is NIPT in detecting Down Syndrome?
NIPT is highly accurate for detecting Trisomy 21 with a very low false positive rate, but confirmatory tests provide a definitive diagnosis.
What tests are used to confirm a positive NIPT result for Trisomy 21?
Confirmatory diagnostic tests include procedures like chorionic villus sampling (CVS) or amniocentesis to definitively diagnose Trisomy 21.
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