Table 4.

Use and handling of non-invasive fetal test systems

Characteristics	N (%)
Offer of first-trimester screening parallel to non-invasive prenatal test
Yes	27 (71.05)
No	0 (0)
Optional	11 (28.95)
Offer of non-invasive prenatal testing in a two-stage procedure before first trimester screening
Yes	6 (15.79)
Offer of non-invasive prenatal testing from a certain threshold after completion of the first trimester screening
> 1:1000	10 (26.32)
> 1:500	11(28.95)
> 1:100	11(28.95)
No	6 (15.79)
Offer of non-invasive prenatal testing after informed consent without performing first-trimester screening
Yes	15 (39.47)
The following question pertains to the provision of a non-invasive prenatal test
Trisomy 21, 13 and 18	8 (21.1)
Trisomy 21, 13 and 18, monosomy and fetal sex	24 (63.16)
Other diseases such as Di-George syndrome	6 (15.79)