What is a prenatal screening test?

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A prenatal screening test shows the risk for certain fetal conditions in pregnancy but cannot actually diagnose them. The conditions screened include Down syndrome, Trisomy 18 (a serious chromosome condition) and spina bifida. Information from screening tests is used to determine whether a diagnostic test, such as amniocentesis, is advised.

Each screening test requires a blood draw. Some also use a nuchal translucency (NT) ultrasound to measure the fluid at the back of the baby's neck. Screening tests do not increase the risk for miscarriage. Only one prenatal screening test is done during a pregnancy.

Continue Learning about Women's Health

Women's Health

Women's Health

Did you know that women are more likely to seek medical care than men? Sexual health needs, like pregnancy and contraception, often necessitate early visits to a doctor. But as we age, various health issues affect women more than ...

men, including depression, weight problems, and certain types of arthritis.In order to maintain your health and wellness, make sure you get an annual checkup.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.