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The page below is a sample from the LabCE course Advances in Noninvasive Prenatal Testing For Down Syndrome and other Trisomies. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Unconjugated estriol (uE3-estriol) and dimeric inhibin A (DIA) are two of the tests that are part of the quadruple prenatal screening panel (quad screen), which is performed on maternal serum during the second trimester of pregnancy. Which of the following tests are also included on the quad screen?

More than one answer is correct. Please select all correct answers