Whole Blood Specimen Collection From Pregnant Subjects

This sample collection protocol allows for the identification, recruitment, and participation
in women who are pregnant and are known to:

1. be at an increased risk for fetal genetic abnormalities

2. be at increased risk for congenital fetal infection by virtue of being positive by
initial screening tests, or are known to have an active infection during this pregnancy.

3. possess irregular blood group antigens (the subject or the father of the baby) and are
therefore at increased risk for fetal sensitization during this pregnancy.

Inclusion Criteria:

- Subject willing to provide consent to have up to 50 mL of whole blood collected at one
or more monthly (≥25 days) clinic visits

- Subject is pregnant carrying a singleton fetus of 10 to 26 weeks gestational age
inclusive

- Subject is 18 years of age or older

- Subject is at an increased risk for one or more of the following:

- fetal gene and chromosome abnormalities

- congenital fetal infection

- known to possess irregular blood group antigens (subject or father of the baby)

- known to have some other condition amenable to noninvasive prenatal testing

Exclusion Criteria:

- Pregnancy is non-viable