Counting platelets at transfusion threshold levels: impact on the decision to transfuse. A BEST Collaborative ‐ UK NEQAS(H) International Exercise

BACKGROUND AND OBJECTIVES: Obtaining accurate and precise platelet enumeration in automatic platelet analysers at low platelet counts is a challenge. To explore the performance of current haematology analysers in counting platelet concentrations usually used as platelet transfusion threshold. MATERIAL AND METHODS: An international exercise where four blood samples with platelet levels near usual platelet transfusion thresholds was prepared and …