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.

• From: NHS England
• Published: 7 May 2019
• Last updated: 5 February 2025 — See all updates

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

This information is available in A4 PDF format (in English) to print out and provide for people who cannot access digital information (see list above).

Published 7 May 2019
Last updated 5 February 2025 + show all updates

1. 5 February 2025

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

2. 31 October 2021

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

3. 15 February 2021

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

4. 7 May 2019

   First published.