Test for chromosomal conditions such as trisomies in the fetus by assaying fetal cfDNA or cfRNA in the mother's blood. Because the test assays chromosomes it can also detect fetal sex.
Antenatal screening for Down's, Edwards' and Patau's syndromes with the reflex DNA method was shown in our recent study to have higher screening performance compared with the combined test alone, and compared with the proposed recall DNA method...
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