Siobhan M. Dolan MD MPH


Nuchal Translucency Screening Test

The nuchal (say “NEW-kuhl”) translucency screening is a test done during pregnancy. It uses ultrasound to measure the thickness of the fluid buildup at the back of the developing baby’s neck. If this area is thicker than normal, it can be an early sign of Down syndrome, trisomy 18, or heart problems. The test is done…

Anencephaly

Anencephaly is a condition in which a fetus forms with a partially formed brain and spinal cord. A child with this condition is stillborn or dies shortly after birth. Anencephaly can be detected with prenatal tests, such as ultrasound and amniocentesis. If a woman learns that she is pregnant with a fetus that has…

Obstetric Panel

Briefly discusses obstetric panel, a group of blood tests used to check the health of women during early pregnancy. Includes links to info on tests such as antibody screening, blood type, complete blood count, HIV, rubella, and hepatitis B.

Cell-Free Fetal DNA Test

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…

Home Pregnancy Test

Home pregnancy tests use a sample of a woman’s urine to detect the presence of a hormone (called human chorionic gonadotropin, or hCG) that is produced during pregnancy. If the test is positive for the hormone, it usually means the woman is pregnant. These tests are available without a prescription, and their accuracy…