We will perform an open, parallel-comparison randomized clinical trial of an "informed free choice" approach to prenatal testing to usual care in 1200 women presenting for prenatal care by 20 gestational weeks. 600 women will be randomized to usual care, the control group, in which they will receive no intervention beyond a baseline pre-randomization interview and a follow-up telephone interview. The other 600 women will be randomized to "informed free choice," in which they will be instructed to view the updated PT Tool and will be told that they can have whatever tests they would like (including no tests) and that tests that are not covered by their insurance will be paid for by the study. They also will participate in a follow-up telephone interview.