A–Z Glossary

Second trimester screening

Prenatal screening in the middle of pregnancy that estimates the chance of certain chromosomal conditions and open neural tube defects.

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Second trimester screening and quad screen test

Second trimester screening and quad screen test

What second trimester screening means Second trimester screening is a broad term for prenatal tests offered in the middle of pregnancy to refine the chance of certain fetal conditions. In practice, it often refers to maternal serum screening, sometimes combined with ultrasound. The quad screen is the most common blood-based option. It is called a […]