Dr. Shannon M. Clark discusses the following with genetic counselor, Liz Sheehan @agirlsnameisbizbiz:
•what are fetal chromosomal aneuploidies
•different types of antenatal screening tests
•cell-free DNA screening
•NT measurement plus serum screening in first trimester
•quad screen in second trimester
•screening PGT tested embryos
•ultrasound soft markers: choroid plexus cysts, echogenic intracardiac focus, echogenic bowel, pylectasis, single umbilical artery

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