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When should I get a quad marker screen?

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Between 15 and 20 weeks of pregnancy, your health care provider may offer you a quad marker screen. The test can only be performed during the 15th and 20th week of pregnancy.

SOURCES: The March of Dimes.  , "Second trimester maternal serum screening for fetal open neural tube defects and aneuploidy." American College of Medical Genetics, 2004.


Deborah A. Driscoll, MD

Reviewed by Jennifer Robinson on August 30, 2019

SOURCES: The March of Dimes.  , "Second trimester maternal serum screening for fetal open neural tube defects and aneuploidy." American College of Medical Genetics, 2004.


Deborah A. Driscoll, MD

Reviewed by Jennifer Robinson on August 30, 2019

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What substances does a quad marker screen measure?

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