Cell-Free DNA Test

Test Overview

Cell-free fetal DNA is a screening test to look for certain birth defects in a fetus. It's done to find birth defects caused by an abnormal number of chromosomes. It also can reveal the sex and blood type of the fetus.

This is a blood test for the mother. The test can be done as early as 10 weeks in the pregnancy.

If this screening test is positive, it means there is a chance your baby has a birth defect. In that case, your doctor may suggest that you have a diagnostic test, which can show if there is a birth defect.