Down's Syndrome Screening Quality Assurance Support Service (DQASS)

supplier for the provision of a Down's Syndrome Screening Quality Assurance Support Service (DQASS). The service is a clinical statistical support service to support the Down's syndrome (T21) Edwards' syndrome (T18) and Patau's syndrome (T13) screening programme by providing independent audits of screening laboratory and ultrasound data in a standardised and statistically valid format. The service will is led by and include staff who are statisticians and are experts, experienced and knowledgeable in the complexity of screening for these conditions.