• Dr. Aaron Carroll is a professor of pediatrics at Indiana University School of Medicine and a health policy researcher.
• He has written extensively on the evolution of prenatal testing, including cell-free fetal DNA testing, amniocentesis, CVS tests, and PGT.
• He explains that cell-free fetal DNA testing is extremely accurate for detecting the primary trisomies (21, 13, 18), with a 99.4% detection rate and a 0.1% false-positive rate.
• Invasive testing is also highly accurate, but carries a small risk of miscarriage.
• Ultrasound findings rarely provide much information if cell-free fetal DNA testing has already been done, and no additional information if invasive testing has been done.
Published January 30, 2023
Visit ParentData to read Emily Oster’s original post Prenatal Testing Deep Dive
