Donald School Journal of Ultrasound in Obstetrics and Gynecology

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VOLUME 4 , ISSUE 4 ( October-December, 2010 ) > List of Articles

REVIEW ARTICLE

Understanding Biochemical Markers for Antenatal Screening

Keywords : Aneuploidy,Nuchal translucency,Prenatal diagnosis,Quadruple test,Screening,Triple test

Citation Information : Understanding Biochemical Markers for Antenatal Screening. Donald School J Ultrasound Obstet Gynecol 2010; 4 (4):333-335.

DOI: 10.5005/jp-journals-10009-1153

License: CC BY-NC 4.0

Published Online: 00-12-2010

Copyright Statement:  Copyright © 2010; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Screening tests to identify fetuses at risk for aneuploidies should be offered to all pregnant women.

It should be remembered that screening tests can not diagnose a birth defect; they can only indicate an increased risk. An abnormal screening test result simply mean that additional testing is recommended.

Maternal serum biochemical markers in first trimester are free beta-hCG and PAPP-A. In second trimester the markers are AFP, UE3, hCG (Triple test) and inhibin added to these three markers forming the quadruple test. Level of cell free fetal DNA and fetal cells in maternal circulation are some of the molecular techniques for prenatal diagnosis of aneuploidies.


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