Public Health England
This guidance explains laboratory standards and processes for antenatal chromosomal abnormality screening for:
It supports healthcare professionals and stakeholders in the operational delivery of the screening pathway. New screening coordinators, screening support sonographers and laboratory leads should use it to support their induction and practice.
The handbook includes:
Downs Syndrome Screening Quality Assurance Support Service (DQASS) is a service commissioned by Public Health England (PHE) to support NHS FASP.
The main aim of DQASS is to monitor and support the quality and effectiveness of Downs syndrome, Edwards syndrome and Pataus syndrome screening in England.
We will update the handbook regularly to make sure it remains a valid reference document.