Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Indication for testing | Positivity rate | Percent of total positives (n = 635) |
|---|---|---|
| Multiple Indications | 5.42% (113/2,084) | 17.80% |
| Ultrasound Finding | 3.20% (142/4,439) | 22.36% |
| Maternal Age | 1.74% (350/20,115) | 55.12% |
| Serum Biochemical Screening | 1.40% (15/1,069) | 2.36% |
| Personal/Family History | 0.65% (7/1,082) | 1.10% |
| Other High Risk | 0.63% (3/479) | 0.47% |
| Average Risk | 0.32% (5/1,562) | 0.79% |
