Platelet CountBlood PlateletsPlatelet AggregationThrombocytopeniaPlatelet AdhesivenessPlatelet TransfusionLeukocyte CountPlatelet Membrane GlycoproteinsThrombocytosisBlood Cell CountMicrochemistryPlatelet Factor 4Purpura, Thrombocytopenic, IdiopathicPlatelet Function TestsCD4 Lymphocyte CountMegakaryocytesPlatelet Glycoprotein GPIIb-IIIa ComplexPlatelet Glycoprotein GPIb-IX ComplexBleeding TimePlatelet Activating FactorThrombopoietinPurpura, ThrombocytopenicThrombinTime FactorsAntigens, Human PlateletFibrinogenThrombopoiesisSplenectomyAdenosine DiphosphateThrombosisRabbitsP-SelectinHemostasisBlood CoagulationErythrocyte CountDisseminated Intravascular CoagulationRats, Inbred Strainsvon Willebrand FactorUveaMethodsThrombocythemia, EssentialHemorrhageHIV InfectionsHELLP SyndromeDose-Response Relationship, DrugBlood Coagulation DisordersProthrombin TimeReceptors, ThrombopoietinPlatelet Membrane Glycoprotein IIbHematologic TestsMicrofluidicsAqueous HumorHypersplenismCell CountBody FluidsHematocritBlood Coagulation TestsAspirinKineticsAutoanalysisSensitivity and SpecificityEvaluation Studies as TopicAbsorptionThromboxane A2PlateletpheresisInfusions, ParenteralPartial Thromboplastin TimeCentrifugationTearsRetrospective StudiesTreatment OutcomeInjectionsPlatelet Factor 3CollagenHeparinHematologyBlood Coagulation FactorsRheologyPregnancy Complications, HematologicIndicators and ReagentsPlatelet-Rich PlasmaPlatelet Storage Pool DeficiencySerotoninRadioimmunoassayThrombelastographyThrombocytopenia, Neonatal AlloimmuneRistocetinProspective StudiesBone MarrowReticulocyte CountBrainInjections, IntraventricularChromatography, High Pressure LiquidSerum AlbuminInfant, NewbornErythrocytesReference ValuesBlood PreservationFeverHematopoiesis