NIPT TEST COMPARISON verifi® Verinata Harmony Ariosa MaterniT21 Sequenom NIPT Natera Result Types Aneuploidy Detected Aneuploidy Suspected No Aneuploidy Detected Risk score incorporating maternal, gestational age Positive Negative Risk score incorporating maternal, gestational age Assay Failure Rate <0.7% 4.6 – 4.9%1%5.9 – 12.6% Sample1 tube maternal blood 2 tubes maternal blood 2-4 tubes maternal blood (best with paternal sample) Egg Donors Yes (with data)NoYesNo Test Menu T21, T18, T13 Optional sex chromosome aneuploidies (Published data) T21, T18, T13 Y chromosome (optional)(not published) T21, T18, T13 Mandatory sex chromosome aneuploidies (not published) T21, T18, T13 Sex chromosome aneuploidies (only MX published) Published Clinical Validation Large-scale, blinded clinical validation Small, blinded clinical validation