Understanding False Negatives in NIPT: Is Non-Invasive Prenatal Testing Always Accurate?

Discover if false negatives can occur with NIPT and the importance of follow-up diagnostic tests for accurate prenatal screening.

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Yes, a false negative can occur with NIPT (Non-Invasive Prenatal Testing). While NIPT is highly accurate for detecting certain chromosomal abnormalities, it is not infallible. Factors such as low fetal DNA in the maternal blood, early testing, or specific genetic conditions can lead to false negatives. Always confirm NIPT results with diagnostic tests like amniocentesis or CVS for accurate diagnosis.

FAQs & Answers

  1. What is NIPT and how does it work? NIPT, or Non-Invasive Prenatal Testing, analyzes small fragments of fetal DNA found in the mother's blood to screen for specific chromosomal conditions.
  2. What are the chances of a false negative with NIPT? Although NIPT is highly accurate, the likelihood of a false negative can vary based on factors like fetal DNA levels and timing of the test.
  3. What should I do if I receive a positive NIPT result? A positive NIPT result should be followed up with confirmatory diagnostic tests such as amniocentesis or chorionic villus sampling (CVS).
  4. Are there any risks associated with amniocentesis? Yes, amniocentesis comes with some risks such as miscarriage, but it provides a definitive diagnosis for chromosomal abnormalities.