Assessment of an immature platelet fraction (IFP%) in the diagnosis of thrombocytopenia

Annales de biologie clinique
Isabelle CannavoSophie Raynaud

Abstract

Reticulated platelets are young platelets containing mRNA. They reflect the rate of thrombopoesis. The aim of this study was to evaluate the reliability of the percentage of reticulated platelets (IPF%) as a diagnostic test for thrombocytopenia pathogenesis. IPF% was measured using XE 2100 Sysmex. An IPF% reference range in 52 healthy individuals was established as 1-4.5% with a median 2.2%. In all the 13 patients with idiopathic thrombocytopenic purpura IPF% was increased (median 11.8, range 5.3-54.3%). Only 7 out of 18 patients with disseminated intravascular coagulation had high IPF% (median 5.4%, range 2.9-14.1%). Surprisingly, IPF% was increased in 17 out of 22 patients with acute leukaemia (median 9.7%, range 0.9-41.9%). In CIVD, IPF% values correlated with the severity of the illness. Increased values in acute leukaemia could not be explained by non specific staining but by delayed maturation of reticulated platelets. A high IPF% does not substantiate hyperdestructive thrombocytopenia but a diagnosis of idiopathic thrombocytopenic purpura should be questioned if IPF% is not raised.

Citations

May 25, 2013·Cell Biochemistry and Biophysics·Xu Qian, Liu Wen-jun
May 9, 2014·Clinical Chemistry and Laboratory Medicine : CCLM·Johannes J M L Hoffmann
Sep 22, 2017·Frontiers in Medicine·Deonilson SchmoellerHenrique Luiz Staub

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