Erythrocytes.fetal/Erythrocytes:Ratio:Pt:Bld:Qn:Flow cytometry
erythrocytes.fetal/erythrocytes:ratio:pt:bld:qn:flow cytometry
RBC.fetal/Erythrocytes FC (Bld) [Ratio]
rbc.fetal/erythrocytes fc (bld) [ratio]