What Is the Ideal Fetal Fraction for Accurate Gender Determination?

Discover the optimal fetal fraction percentage for reliable gender prediction in prenatal testing.

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A good fetal fraction for gender determination is typically above 4%. The fetal fraction refers to the percentage of fetal DNA in the mother's bloodstream. For accurate non-invasive prenatal testing (NIPT), a higher fetal fraction increases reliability. Most testing companies recommend a minimum of 4%, although results are more reliable as the fetal fraction increases, ensuring accurate determination of the baby’s gender.

FAQs & Answers

  1. What fetal fraction is considered reliable for NIPT? A fetal fraction above 4% is generally considered reliable for non-invasive prenatal testing.
  2. How does fetal fraction affect gender determination accuracy? Higher fetal fractions improve the accuracy of gender determination, with results being more reliable as the percentage increases.
  3. Can I find out my baby's gender with a low fetal fraction? While it's possible, a low fetal fraction may lead to less accurate gender prediction results.