Fetal chromosome 13+18+21 trisomy:PrThr:Pt:Plas.cfDNA:Ord:Dosage of chromosome specific cf DNA
fetal chromosome 13+18+21 trisomy:prthr:pt:plas.cfdna:ord:dosage of chromosome specific cf dna
Fet Chr 13+18+21 Ts Plas.cfDNA Ql
fet chr 13+18+21 ts plas.cfdna ql