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[The triple test]

J Deutinger1

  • 1Abteilung für Pränatale Diagnostik und Therapie, Universitätsklinik für Frauenheilkunde, Wien, Osterreich.

Gynakologisch-Geburtshilfliche Rundschau
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

The triple test offers a noninvasive prenatal screening for chromosomal abnormalities like trisomy 21 for all pregnant women. Performed accurately, it aids in early risk assessment, improving detection rates.

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Area of Science:

  • Maternal-Fetal Medicine
  • Prenatal Diagnostics
  • Genetics

Context:

  • Historically, advanced maternal age (>35) was the primary reason for prenatal chromosomal diagnosis.
  • The introduction of the triple test revolutionized prenatal screening by offering a noninvasive method for all pregnant individuals.

Purpose:

  • To evaluate the efficacy and scope of the triple test in identifying chromosomal abnormalities.
  • To highlight the benefits of the triple test for both women over and under 35 years of age.

Summary:

  • The triple test accurately diagnoses approximately 70% of trisomy 21 cases with a 9% positive screening rate.
  • It detects trisomy 18 and Turner syndrome, with a low false-negative rate of 0.1%.
  • Laboratory quality and precise gestational age determination via ultrasound are crucial for test accuracy and identifying structural abnormalities.

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Impact:

  • The triple test provides valuable risk assessment for chromosomal abnormalities beyond advanced maternal age.
  • It enhances early detection and management of fetal conditions, improving pregnancy outcomes.
  • Future advancements aim to increase the triple test's accuracy and facilitate first-trimester screening.