EntityQ14225730· pop 7· linked from 40 articlescffDNASign in to savefetal DNA in the maternal bloodstreamConnectionsDown syndromeEntitymiscarriageEntityprenatal testingEntityaneuploidyEntityvenipunctureEntitytriple testEntitypositive and negative predictive valuesEntityAfricaEntityAsiaEntitybloodEntitydeoxyribonucleic acidEntityInternational Standard Book NumberEntitycirculatory systemEntityribonucleic acidEntityWayback MachineEntityarterial hypertensionEntitydigital object identifierEntityInternational Standard Serial NumberEntityplacentaEntitynucleic acidsEntityCategoriesBloodDNAObstetrical procedures