Spread the love How cell-free fetal DNA testing works Cell-free fetal DNA (cffDNA) testing is a non-invasive prenatal screening method that analyzes fetal DNA circulating in the mother’s blood to assess the risk of certain chromosomal abnormalities. Here’s how it works: How Cell-Free Fetal DNA Testing Works 1. Sample Collection Timing: The test can be … Continue reading How does cell-free fetal DNA testing work