<unk>  is the elevation of the white blood cell count above the normal range (greater than 11,000 per mm3).<unk>  is frequently a sign of an inflammatory response, most commonly the result of infection, but may also occur following certain parasitic infections, bone tumors, strenuous exercise, emotional stress, pregnancy,  anesthesia, and epinephrine administration.<unk>  may be classified into 5 sub-types: neutrophilia (most common), lymphocytosis, monocytosis, eosinophilia, and basophilia. Other classifications include: Left shift or right shift<unk> . The pathogenesis of<unk>  is characterized by the increase of leukocytes (primarily neutrophils), followed by the proliferation and release of granulocyte and monocyte precursors in the bone marrow, which is then stimulated by several products of inflammation including C3a and G-CSF.
Leukocytosis
Lymphocytosis
Thrombocytosis
Lymphocytopenia
Neutrophilia
Monocytosis
Leukopenia
Plasmacytosis