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The Sage™ prenatal screen has a higher detection rate and lower false positive rate than existing screening tests. This gives pregnant women, their families and their healthcare providers greater confidence in the result and reduces the need for unnecessary invasive follow up procedures and the associated stress. Sage™ has a fast turnaround time to results, allowing pregnant women and their families to make informed choices about their pregnancy.

Aneuploidy Sensitivity Specificity PPV
Trisomy 21 (Down’s syndrome) >99% 99.97% 95.06%
Trisomy 18 (Edwards’ syndrome) >99% 99.98% 91.43%
Trisomy 13 (Patau’s syndrome) >99% 99.98% 83.33%
ChrX ( Chromosome X) >99% 99.94% 74.19%

In a study of over 2000 samples, 6 samples were determined to be at high-risk of having an autosomal aneuploidy. This is a prevalence rate of 0.3%, which is consistent with prevalence in published studies.

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