Correlations between first and second trimester markers for Down's syndrome screening

MeSH terms

• Adult
• Biomarkers / analysis*
• Chorionic Gonadotropin / blood
• Down Syndrome / diagnosis*
• Down Syndrome / diagnostic imaging
• Female
• Fetal Diseases / diagnosis*
• Fetal Diseases / diagnostic imaging
• Humans
• Mass Screening
• Pregnancy
• Pregnancy Trimester, First*
• Pregnancy Trimester, Second*
• Pregnancy-Associated Plasma Protein-A / analysis
• Prenatal Diagnosis
• Ultrasonography
• alpha-Fetoproteins / analysis