Understanding Fetal Fraction in cfDNA screening
Fetal fraction has been used by some laboratories to determine if they can have confidence in their results. However, there are significant factors to consider when determining its merit, including assay precision, the accuracy of a reported fetal fraction metric and the implications of using a fetal fraction cutoff. In the enclosed publication, we present the science, the data and the impact of using the fetal fraction metric within a clinical context.