International guidelines

United Kingdom

Published by:National Institute for Health and Care Excellence

Last published:2021

North America

Published by:British Columbia Prenatal Genetic Screening Program

Last published:2025

Published by:US Preventive Services Task Force

Last published:2023

Published by:American College of Radiology; American College of Obstetricians and Gynecologists; American Institute of Ultrasound in Medicine; Society for Maternal Fetal Medicine; Society of Radiologists in Ultrasound

Last published:2023

Published by:Society of Obstetricians and Gynaecologists of Canada

Last published:2021

Published by:Spina Bifida Association

Last published:2018

Published by:American College of Obstetricians and Gynecologists

Last published:2017 (reaffirmed 2025)

Published by:American College of Obstetricians and Gynecologists

Last published:2017 (reaffirmed 2022)

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