Perinatology.com logo
perinatology.com
Risk for Chromosome Abnormalities at Term

Risk at Term Based on Maternal Age

This tool estimates the term risk for trisomy 21 (Down syndrome) and the risk for any chromosome abnormality based on maternal age at the time of delivery before incorporating cfDNA/NIPT, serum screening, ultrasound markers, or diagnostic testing.  Age range supported: 15–50 years.

years
Reference:
American College of Obstetricians and Gynecologists. ACOG Practice Bulletin No. 88. Invasive prenatal testing for aneuploidy. Obstet Gynecol. 2007 Dec;110(6):1459–67.

See also:

  • Midtrimester Risk of Chromosome Abnormality
  • Maternal Age and Gestational Age-Specific Risk for Chromosomal Abnormalities

    •  

    All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. Neither Perinatology.com nor any other party involved in the preparation or publication of this site shall be liable for any special, consequential, or exemplary damages resulting from the use of this material.