This publication explains the chance calculation software requirements for offering Downs syndrome screening.
This publication was previously published by Public Health England, which closed on 30 September 2021.
Updates to this page
Published 1 January 2013 Last updated 30 January 2025 +show all updates
Added clarification that publication was previously published by Public Health England. Changed lead organisation to NHS England. Removed reference to screening helpdesk.
Updates to terminology.
Reformatted Downs syndrome screening: risk calculation software requirements as html publication.