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Pregnancy & Prenatal Testing

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First Trimester (up to 12 weeks)

At the time of the first prenatal visit, which often takes place during the first trimester of pregnancy, a health practitioner may order several or most of the tests described below to check for certain infections that could harm the unborn baby or other conditions that could threaten the mother's health during the pregnancy. These tests may be offered at this time if a pre-conception medical checkup was not done. 

In addition, the following tests may be ordered: 

The following tests are not routinely performed but may be discussed with or offered to women who are at an increased risk of having a baby with certain chromosomal or genetic abnormalities. 


Centers for Disease Control and Prevention: Guidelines for Vaccinating Pregnant Women
March of Dimes: Routine prenatal tests Prenatal care and tests