Often increased
6- Abnormal Genetic or Biochemical MarkersReference range exampleAdult ( > 16y), Female: 0–1 Not PresentLinked diagnostic tests1Chorionic Villus Sampling (CVS)
- Alpha-Fetoprotein (Amniotic Fluid, Following Amniocentesis at 12 to 16 Weeks)Reference range exampleAdult ( > 16y), Female: 194–197 pmol/LLinked diagnostic tests1Alpha-Fetoprotein (AFP, Amniotic Fluid Following Amniocentesis)
- Fetal Nuchal Thickness on Ultrasound (Pregnancy Weeks 10 to 14)Reference range exampleAdult ( > 16y), Female: 2.18–2.5Linked diagnostic tests1Fetal Nuchal Translucency (FNT on Ultrasound)
- Follicle-Stimulating Hormone (FSH)Reference range exampleAdult ( > 16y), Female: 0.6–55 units/L; Adult ( > 16y), Male: 1.49–15 units/LLinked diagnostic tests1Follicle-Stimulating Hormone (FSH) Concentration
- Intracranial Pressure (Cerebrospinal Fluid Pressure, CSF Pressure)Linked diagnostic tests1Intracranial Prassure Monitoring (CSF Pressure)
- Luteinizing Hormone (LH)Reference range exampleAdult ( > 16y), Female: 3–56 units/L; Adult ( > 16y), Male: 1.2–8 units/LLinked diagnostic tests1Luteinizing Hormone (LH) Concentration