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 - Northwestern Memorial Hospital - Chicago

Diagnostic Tests

Clinical reproductive diagnostic tests can determine chromosomal disorders. We offer medical procedures for the prenatal diagnosis of chromosomal disorders:

  • Chorionic Villus Sampling (CVS): Performed during the first trimester, it tests for chromosomal abnormalities, such as Down syndrome and certain other genetic conditions.
  • Amniocentesis: Performed during the second trimester, it tests for chromosomal abnormalities, neural tube defects, such as spina bifida and certain other genetic conditions.
  • Advanced Ultrasound: Performed after 5 weeks of pregnancy, this provides a detailed and targeted look at the fetus by using sophisticated diagnostic imaging equipment.
  • Precutaneous Umbilical Blood Sampling: Performed during the second or third trimester, this highly specialized procedure takes blood from the fetus to test for chromosomal abnormalities and other genetic conditions.
  • Pre-implantation Genetic Diagnosis (PGD) for Selected Disorders: Performed before implantation, PGD tests early-stage embryos produced in vitro fertilization (IVF) for the presence of a variety of conditions.
Last UpdateJune 6, 2011


For more information or to make an appointment please call 312-472-4151.