Cribado de cromosomopatías fetales en España. Cambios hospitalarios en el periodo 2006-2011

First trimester combined screening test is widely available across Spanish hospitals, and most centres, do not consider advanced maternal age as the only indication for the invasive procedure, have CVS available, perform combined first trimester test only with nuchal translucency as an ultrasound marker, do not know the analyser used for measure biochemical markers, and that the laboratory provide risk calculations.