Fetal anomaly screening: 20-week scan

Information about the screening test that takes place between 18 weeks and 20 weeks 6 days of pregnancy, commonly known as the 20-week or mid-pregnancy scan.


Fetal anomaly screening: the 20-week scan

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This guide to the 20-week ultrasound scan tells expectant parents:

  • its purpose
  • what the possible results mean
  • what will happen if it cannot be completed
Published 7 May 2019