title: Pseudo-storage pool disease due to platelet degranulation in EDTA-collected peripheral blood: a rare artifact.
abstract: We report a patient who was referred for acute myocardial infarction and presented a pseudo-storage pool disease. The platelets from the blood collected with ethylene diamine tetra-acetic acid (EDTA) were moderately underestimated by the automated analyser, stained poorly on the blood smear and appeared agranular under the microscope. This artifactual anomaly does not occur in samples anticoagulated with citrate, heparin or the mixture citrate theophyline adenine dipyridamole. Reports of EDTA-induced pseudo-storage pool disease are scarce, possibly because underestimation of this poorly explained and difficult to diagnose phenomenon.
authors.affiliation: Service D'hématologie biologique, Centre Hospitalier Universitaire, Nancy, France. jf.lesesve@chu-nancy.fr
authors.forename: J-F
authors.initials: JF
authors.lastname: Lesesve
authors.forename: V
authors.initials: V
authors.lastname: Latger-Cannard
authors.forename: T
authors.initials: T
authors.lastname: Lecompte
mesh_terms: D000368:Aged; D001792:Blood Platelets / Q000473:pathology*; D001800:Blood Specimen Collection / Q000379:methods / Q000592:standards*; D015550:Cell Degranulation / Q000187:drug effects*; D003951:Diagnostic Errors; D004492:Edetic Acid / Q000494:pharmacology*; D005260:Female; D006651:Histocytochemistry / Q000592:standards; D006801:Humans; D009203:Myocardial Infarction / Q000097:blood; D010976:Platelet Count; D010981:Platelet Storage Pool Deficiency / Q000175:diagnosis*
chemical_list: D004492:Edetic Acid