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Guidance

Screening in pregnancy: 20-week screening 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 screening scan.

Updates to this page

From:
NHS England
Published:
7 May 2019
Last updated:
6 March 2026
Show all updates

  1. Removed reference to PDF. Added information on requesting other formats.

  2. Updated NHS England contact information. Removed 'for print' file, the HTML version can be used to print.

  3. Addition of plain A4 PDF version for printing, to provide for people unable to access this information online.

  4. Minor changes to the wording of use of personal information section (at end of leaflet).

  5. First published.

Applies to England

Documents

Screening in pregnancy: 20-week screening scan

HTML

Details

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

  • its purpose
  • what the possible results mean
  • what will happen if it cannot be completed

To request another format, you can phone 0300 311 22 33 or email england.contactus@nhs.net.

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