ERRORS

Falsely high RBC count

Wbc>100,000 microliter;

Large platelets;

Cryoglobulin;

Cryofibrinogen

Falsely low RBC count

Autoagglutinations;

Cold agglutinins;

Hemolysis (in vitro);

Microcytosis;

Schistocytes;

Clottings

Falsely high MCV

Autoagglutination;

High wbc>50,000 microliter;

Cold agglutinins;

Old specimen;

Hyperosmolar state;

Reduced red cell deformability

Falsely low MCV

Cryoglobulins;

Cryofibrinogen;

Giant platelets;

Hemolysis (in vitro)

Swollen red cells

Falsely high mean cell hemoglobin

Lipemia;

Icterus;

Chlomicrons;

High wbc>50,000 microliters;

Spuriosly high hemoglobin;

Spuriously low RBC

Falsely low mean cell hemoglobin

Spuriosly low hemoglobin;

Falsely low hemoglin;

Spuriosly high hematocrit

Falsely high MCHC

Cold agglutinins;

Autoagglutination;

Clotting;

Hemolysis (in vitro);

Hemolyssi (in vivo);

Spuriosly high hemoglobin;

Falsely low hematocrit

Falsely low MCHC

High wbc>50,000/uL;

Falsely low hemoglobin;

Spuriosly high hematocrit

Falsely high hemoglobin

Lipemia;

Icterus;

Chylomicrons;

Lysis-resistant RBCs with abnormal hemoglobins;

Wbc>20,000/uL';

Platelet count;

Parental nutrition;

Hypergammaglobulinemia;

Cryoglobulin;

Cryofibrinogen;

Hemolysis (in vitro);

Heparin;

Hyperbilirubinemia

Falsely low hemoglobin

Clotting

Falsely high microhematocrit

Dehyration;

Hemoconcentration;

Insufficient centrifugation;

Buffy coat;

Inclusion;

Hyponatremia;

Plasma trapping

Falsely low microhematocrit

Hemolysis (in vitro);

Improper sealing of the capillary tube;

Increased anticoagulation concentration;

Introduction of excess tissue fluid;

Hypernatremia

Falsely high hematocrit

Cryoglobulin;

Cryofibrinogen;

Giant platelets;

High wbc (>50,000/uL);

Hyperglycemia(>600/dL)

Falsely low hematocrit

Autoagglutination;

clotting;

hemolysis (in vitro);

Microcytic red cells

Falsely high wbc

Lysis resistant rbc with abnormal hemoglobins;

Nucleated rbcs;

Megakaryoctes fragments;

Micromegakaryoblasts;

Platelet clumps;

Giant platelets;

Cryoglobulins;

Cryofibrinogen;

Heparin;

Monoclonal proteins

Falsely low wbc

Leukemia;

Leukoagglutination;

Clotting;

Smudge cells

Falsely low neutrophils

Neutrophil aggregation;

Neutrophil with hemosiderin granules

Falsely high lymphocyte

Nucleated red cells;

Giant platelets;

Platelet clumps;

Malarial parasites;

Hypobloated neutrophils

Falsely high monocyte

Large reactive lymphocytes;

Lymphoblasts;

Lymphoma cells;

immature granules

Falsely high eosinophils

Neutrophil with hemosiderin granules;

Red cells with malarial pigments

Falsely high platelet count

Leukemia;

Fragmented red cells;

Microorganisms;

Cryoglobulins;

Cryofibrinogen;

Hemolysis (in vitro);

Hemolysis (in vivo);

Microcytic red cells;

Red cell inclusions;

White cell fragments

Falsely low platelet count

Platelet clumps;

Old specimen;

Partial clotting;

Giant platelets;

Platelet satellism;

Cold agglutinins;

Clotting;

Heparin

Falsely high MPV

Old specimen;

Determining the MPV too early in and EDTA specimen