How accurate is ultrasound at detecting Down syndrome?
This is a complex question since ultrasound, maternal triple screen blood testing, and age are all used in the screening process. We have extensive experience and on-going research efforts to refine the detection of Down syndrome and similar birth defects. We are presently involved in a national study, the FASTER study, to clarify the most efficient tests to detect Down syndrome. In general, the ultrasound detection rate is approximately 50%, and it is hoped the combined ultrasound and maternal blood tests and age rates will reach 90%.
