title: External quality assessment of the full blood count, and problems associated with the use of fixed blood preparations.
abstract: The experience of using a stored fixed blood preparation for external quality assessment of the full blood count is described. Differences between instruments employing differing technologies are highlighted and the problems of the control of the white cell differential count discussed.
authors.affiliation: Department of Haematology, Addenbrooke's Hospital, Cambridge, England, UK.
authors.forename: B
authors.initials: B
authors.lastname: Warner
authors.forename: D
authors.initials: D
authors.lastname: Reardon
mesh_terms: D001772:Blood Cell Count / Q000295:instrumentation*; D004906:Erythrocyte Count / Q000295:instrumentation; D004909:Erythrocyte Indices; D006452:Hemoglobinometry / Q000295:instrumentation; D006801:Humans; D007958:Leukocyte Count / Q000295:instrumentation; D010976:Platelet Count / Q000295:instrumentation; D011785:Quality Assurance, Health Care; D012015:Reference Standards; D006113:United Kingdom