Fig. 1From: A fetal fraction enrichment method reduces false negatives and increases test success rate of fetal chromosome aneuploidy detection in early pregnancy lossSize-selection NIPS can remarkably improve the detection of fetal chromosomal aneuploidy compared with standard NIPS. A Z-score according to fetal fraction between two different NIPS methods; B Z-score is increased in size-selection NIPS for samples with fetal chromosomal aneuploidy. Red dotted line indicates the Z-score cutoff between screen-negative and screen-positive results. FN: false negativeBack to article page