(A, B, or O, and Rh factor). If you are Rh-negative and the father is
Rh-positive, your fetus may have Rh-positive blood, which can lead to problems
Rh sensitization. For more information, see the topic
Rh Sensitization During Pregnancy.
The sexually transmitted disease
syphilis. This blood test is called a venereal disease
research laboratory (VDRL) test. The U.S. Centers for Disease Control and
Prevention (CDC) and the U.S. Preventive Services Task Force (USPSTF) recommend
that all pregnant women be screened for syphilis early in pregnancy.1, 2
Diseases that are passed down through your family (genetic disorders). You may want to have a screening
test if you or your partner has a family history of genetic disorders or if
certain genetic disorders are more common among people of your racial or ethnic
background. Some screenings for genetic disorders include:3
Tay-Sachs disease, which is most common
in people with an Ashkenazi Jewish, Cajun, or French Canadian
Cystic fibrosis, which is most common
in people with a Caucasian, European, or Ashkenazi Jewish background.
Sexually transmitted diseases (STDs) during pregnancy have been linked to miscarriage,
premature birth, low birth weight, and stillbirth. Many doctors routinely test
for the sexually transmitted diseases
chlamydia. If test results show that you have an STD,
your doctor will discuss treatment with you.