A biophysical profile is a test that is sometimes used during the third trimester of pregnancy. It is often done if there is a question about the baby’s health. This may be because of other test results or certain pregnancy symptoms, or because your pregnancy is high risk.
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Detailed information on second trimester prenatal screening, including alpha-fetoprotein AFP screening, hCG human chorionic gonadtoropin hormone, estriol, and inhibin
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