What is the likelihood of a false positive result for Down syndrome when using NIPT blood testing?
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What is the likelihood of a false positive result for Down syndrome when using NIPT blood testing?
Non-invasive prenatal testing (NIPT) is known for its high sensitivity and specificity in detecting genetic conditions like Down syndrome. However, false positives can still occur.
The likelihood of a false positive result for Down syndrome through NIPT is generally reported to be low, typically around 0.5% to 1%. This means that if NIPT indicates a higher risk for Down syndrome, there is still a small chance that the result is incorrect. It’s important to follow up with further diagnostic testing, such as amniocentesis or chorionic villus sampling (CVS), to confirm NIPT results.
Keep in mind that individual risk factors, the quality of the lab performing the test, and the specific methodologies used can influence these numbers. Always discuss your results and concerns with your healthcare provider for personalized guidance.