title: Quality control of leucocyte-reduced blood components: overestimation of WBC content due to nucleated red blood cells.
abstract: Most methods for quality control of white blood cell (WBC) depletion in blood products are based on flow cytometric techniques. Nearly all commercial kits are based on propidium iodide staining of the DNA and subsequently counting those DNA based events as residual WBC. Here, we could show that a substantial proportion of those events are derived from nucleated red blood cells and therefore not specific for WBCs (e.g. in erythrocyte products 30%). We developed a flow cytometric method for residual WBC counting applying simultaneous DNA- and WBC-specific surface staining to enable this.
authors.affiliation: Institute for Transplantation Diagnostics und Cellular Therapeutics, University Düsseldorf, Düsseldorf, Germany. jfischer@uni-duesseldorf.de
authors.forename: J C
authors.initials: JC
authors.lastname: Fischer
authors.forename: R
authors.initials: R
authors.lastname: Moog
authors.forename: G
authors.initials: G
authors.lastname: Giers
mesh_terms: D001771:Blood Banks / Q000592:standards; D001777:Blood Coagulation; D016913:Blood Component Transfusion / Q000379:methods*; D001792:Blood Platelets / Q000166:cytology; D001793:Blood Preservation / Q000379:methods*; D002467:Cell Nucleus / Q000378:metabolism*; D002469:Cell Separation / Q000379:methods; D004247:DNA / Q000032:analysis; D004912:Erythrocytes / Q000166:cytology; D005434:Flow Cytometry / Q000379:methods; D006801:Humans; D007958:Leukocyte Count; D007962:Leukocytes / Q000166:cytology*; D011786:Quality Control; D013499:Surface Properties
chemical_list: D004247:DNA