A normal result means there are no signs of any genetic defects. However the test could miss some genetic defects.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
An abnormal result may be a sign of more than 200 disorders, including:
Simpson JL, Otano L. Prenatal genetic diagnosis. In: Gabbe SG, Niebyl JR, Simpson JL. Obstetrics: Normal and Problem Pregnancies. 5th ed. New York, NY: Churchill Livingstone; 2007:chap. 7.
American College of Obstetricians and Gynecologists (ACOG). Invasive prenatal testing for aneuploidy. Washington (DC): American College of Obstetricians and Gynecologists (ACOG); 2007 Dec. 9 p.
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