OC15.04: Operator-specific PAPP-A and free beta-hCG MoM values as a method of individual audit of CRL measurements at the NT scan. National data from 171,469 pregnancies
I. Kirkegaard1, C. K. Ekelund2, S. Ball3, P. Newell3, D. Wright3, P. Noergaard4, S. Soerensen5, L. Friis-Hansen6, N. Toerring7, N. Uldbjerg1, A. Tabor2, O. B. Petersen1, F. S. Jorgensen4 1Department of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark; 2Fetal Medicine Unit, Department of Obstetrics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; 3School of Computing and Mathematics, University of Plymouth, Plymouth, United Kingdom; 4Fetal Medicine Unit, Department of Obstetrics and Gynecology, Hvidovre, Copenhagen University Hospital, Copenhagen, Denmark; 5Department of Clinical Biochemistry, Hvidovre, Copenhagen University Hospital, Copenhagen, Denmark; 6Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; 7Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark