I am 15 weeks pregnant with my first child and the doctor asked if I wanted a triple screen test. What exactly is this and should I get it?
Most expectant women will be offered a maternal blood-screening test around weeks 15-20 of their pregnancy. Also known as a "triple marker" test, the triple screen test measures the levels of a protein produced by the fetus as well as two pregnancy-produced hormones in the mother's blood. This test can reveal the chance that a mother is carrying a fetus with neural tube defects or Down syndrome.
The test is sometimes called a quadruple screen (or marker) when the level of an additional substance, called inhibin-A, is also measured. Keep in mind that these are screening tests and only show the possibility of a problem existing — they don't provide a definitive diagnosis, and don't catch all abnormalities. However, if results are positive that a problem could exist, other diagnostic tests can then be performed.
Reviewed by: Mary L. Gavin, MD
Date reviewed: July 2013
|Easter Seals Easter Seals is a nonprofit, community-based health and human services provider dedicated to helping children and adults with disabilities and special needs gain greater independence.|
|National Society of Genetic Counselors This organization represents the genetic counseling profession through research, advocacy, and education.|
|March of Dimes The March of Dimes seeks to prevent birth defects, infant mortality, low birthweight, and lack of prenatal care.|
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