2004
DOI: 10.1177/104063870401600215
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Comparison of Manual and Automated Methods for Determining Platelet Counts in Dogs with Macrothrombocytopenia

Abstract: Abstract. Platelet counts were performed in 43 Cavalier King Charles Spaniels (CKCS, a breed predisposed to macrothrombocytopenia) and in 10 control dogs using 3 automated systems and 3 manual methods (erythrocytelysing agents ϩ counting chamber or evaluation of blood smear). Good correlations were found between platelet counts using all methods (all P Ͻ 0.0001; R 2 ϭ 0.71-0.85). Best correlations were found between the manual methods. Significantly larger platelets were found in CKCS with platelet count

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Cited by 8 publications
(14 citation statements)
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“…In this study, the prevalence of low platelet counts detected by IC, LC and ME was similar to that recorded in two previous reports (Eksell and others 1994, Olsen and others 2004). Although there was strong correlation of platelet counts among IC, LC and ME, poor agreement was detected among methods.…”
Section: Discussionsupporting
confidence: 92%
“…In this study, the prevalence of low platelet counts detected by IC, LC and ME was similar to that recorded in two previous reports (Eksell and others 1994, Olsen and others 2004). Although there was strong correlation of platelet counts among IC, LC and ME, poor agreement was detected among methods.…”
Section: Discussionsupporting
confidence: 92%
“…Estes valores podem estar relacionados com a presença de pequenos agregados plaquetários que não serão contados corretamente em esfregaço ou que podem interferir no volume plaquetário no tubo do contador automático. Tais alterações poderão ser corrigidas no hemocitômetro (OLSEN et al, 2004). Nos três tipos de contagem encontrou-se o mesmo animal trombocitose.…”
Section: Resultsunclassified
“…Determinou-se alta correlação (Tabela 3) da tecnologia do QBC comparado à contagem em câmara de Neubauer (r=0.939), isto porque a metodologia empregada pelo QBC utiliza a emissão de fluorescência dos diferentes tipos celulares após absorção de acredina laranja e organização das células por centrifugação. Agregados plaquetários podem interferir na contagem plaquetária, assim como na estimativa em lâmina (OLSEN et al, 2004). Segundo Tasker, Cripps e Mackin (2001), a determinação do número de plaquetas por este aparelho é fiel em animais trombocitopênicos.…”
Section: Resultsunclassified
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